From d588a739dc81899db7c9ff38ca90d153b8fd7537 Mon Sep 17 00:00:00 2001 From: Muhammad Adil Date: Sun, 11 Jan 2026 07:13:21 +0000 Subject: [PATCH] Add 1 html net tutorials MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Categories: generate-jpg-and-png-images Source: AI Search API Tutorials: - Create PNG from HTML – Full C# Guide with Aspose.HTML Auto-generated by Professionalize.Tutorials Agent --- .../net/generate-jpg-and-png-images/_index.md | 4 +- .../_index.md | 260 +++++++++++++++++ .../net/generate-jpg-and-png-images/_index.md | 4 +- .../_index.md | 257 +++++++++++++++++ .../net/generate-jpg-and-png-images/_index.md | 4 +- .../_index.md | 261 ++++++++++++++++++ .../net/generate-jpg-and-png-images/_index.md | 4 +- .../_index.md | 261 ++++++++++++++++++ .../net/generate-jpg-and-png-images/_index.md | 4 +- .../_index.md | 258 +++++++++++++++++ .../net/generate-jpg-and-png-images/_index.md | 4 +- .../_index.md | 261 ++++++++++++++++++ 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mode 100644 html/swedish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md create mode 100644 html/thai/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md create mode 100644 html/turkish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md create mode 100644 html/vietnamese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md diff --git a/html/arabic/net/generate-jpg-and-png-images/_index.md b/html/arabic/net/generate-jpg-and-png-images/_index.md index d8a721f3d..e26046294 100644 --- a/html/arabic/net/generate-jpg-and-png-images/_index.md +++ b/html/arabic/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Aspose.HTML for .NET هي مكتبة قوية تتيح للمطورين إنشا تعرف على كيفية إنشاء صفحات ويب ديناميكية باستخدام Aspose.HTML لـ .NET. يغطي هذا البرنامج التعليمي خطوة بخطوة المتطلبات الأساسية ومساحات الأسماء وعرض HTML للصور. ### [إنشاء صور PNG بواسطة ImageDevice في .NET باستخدام Aspose.HTML](./generate-png-images-by-imagedevice/) تعلم كيفية استخدام Aspose.HTML لـ .NET لمعالجة مستندات HTML وتحويل HTML إلى صور والمزيد. برنامج تعليمي خطوة بخطوة مع الأسئلة الشائعة. +### [إنشاء PNG من HTML – دليل C# كامل مع Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +تعلم خطوة بخطوة كيفية تحويل ملفات HTML إلى صور PNG باستخدام C# ومكتبة Aspose.HTML. ## خاتمة @@ -52,4 +54,4 @@ Aspose.HTML for .NET هي مكتبة قوية تتيح للمطورين إنشا {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/arabic/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/arabic/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..c0ff2b25e --- /dev/null +++ b/html/arabic/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,260 @@ +--- +category: general +date: 2026-01-10 +description: إنشاء PNG من HTML بسرعة باستخدام Aspose.HTML. تعلّم كيفية تحويل HTML + إلى PNG، وعرض HTML كصورة، وتحديد حجم الصورة في HTML، وحفظ HTML كملف PNG في دليل + واحد. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: ar +og_description: إنشاء PNG من HTML باستخدام Aspose.HTML. يوضح هذا الدليل كيفية تحويل + HTML إلى PNG، وعرض HTML كصورة، وتحديد حجم الصورة في HTML، وحفظ HTML كملف PNG. +og_title: إنشاء PNG من HTML – دليل C# الكامل +tags: +- C# +- Aspose.HTML +- Image Rendering +title: إنشاء PNG من HTML – دليل C# الكامل مع Aspose.HTML +url: /ar/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# إنشاء PNG من HTML – دليل C# كامل + +هل احتجت يوماً إلى **إنشاء PNG من HTML** لكنك لم تكن متأكدًا أي مكتبة ستعطيك نتائج دقيقة على مستوى البكسل؟ لست وحدك. يواجه العديد من المطورين صعوبة عندما يحاولون تحويل صفحة ويب ديناميكية إلى صورة ثابتة للتقارير أو المصغرات أو معاينات البريد الإلكتروني. + +في هذا الدليل سنستعرض حلاً عمليًا من البداية إلى النهاية ي **تحول HTML إلى PNG**، **يُظهر HTML كصورة**، يتيح لك **تحديد حجم الصورة من HTML**، وأخيرًا **يحفظ HTML كملف PNG**—كل ذلك باستخدام Aspose.HTML for .NET. في النهاية ستحصل على تطبيق console جاهز للتشغيل ينتج ملف PNG واضح بالحجم الذي تحدده. + +## ما ستحتاجه + +- **.NET 6.0** أو أحدث (واجهة برمجة التطبيقات تعمل على .NET Framework أيضًا، لكن .NET 6 هو الخيار المثالي). +- **Aspose.HTML for .NET** – يمكنك الحصول عليه من NuGet (`Install-Package Aspose.HTML`). +- ملف **input.html** بسيط تريد تحويله. أي شيء من قالب ثابت إلى صفحة ذات تنسيق كامل يعمل. +- Visual Studio أو Rider أو أي محرر تفضله. + +لا توجد تبعيات إضافية، ولا متصفحات بدون واجهة، فقط مكتبة .NET نظيفة. + +## الخطوة 1: إنشاء PNG من HTML – إعداد المشروع + +أولاً، أنشئ مشروع console جديد وأضف حزمة Aspose.HTML. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +بعد استعادة الحزمة، افتح `Program.cs`. سنستبدل المحتوى الافتراضي بالمثال الكامل لاحقًا، لكن الآن تأكد من أن المشروع يبني بنجاح: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +شغّل `dotnet run`. إذا رأيت التحية، فأنت جاهز للمتابعة. + +## الخطوة 2: تحويل HTML إلى PNG – تحميل المستند + +الآن سنقوم فعليًا **بتحويل HTML إلى PNG**. أول شيء نحتاجه هو كائن `HTMLDocument` يشير إلى ملف المصدر الخاص بنا. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **لماذا هذا مهم:** `HTMLDocument` يحلل العلامات، يطبق CSS، ويبني DOM يمكن لـ Aspose.HTML تحويله إلى صورة لاحقًا. تخطي هذه الخطوة يعني أن أداة العرض لا تملك ما تعالجه. + +## الخطوة 3: عرض HTML كصورة – تعريف خيارات عرض الصورة + +العرض هو المكان الذي تقوم فيه **بتحديد حجم الصورة من HTML** وتضبط إعدادات الجودة مثل مضاد التعرجات. توفر لك فئة `ImageRenderingOptions` تحكمًا دقيقًا. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **نصيحة محترف:** إذا حذفت `Width` و `Height`، سيستخدم Aspose.HTML الحجم الأصلي للصفحة، والذي قد يكون كبيرًا لتصاميم الويب المتجاوبة الحديثة. تحديد الأبعاد يحافظ على خفة ملف PNG. + +## الخطوة 4: حفظ HTML كـ PNG – تنفيذ التحويل + +مع وجود المستند والخيارات جاهزة، نستدعي `ImageConverter`. هذه الخطوة **تحفظ HTML كـ PNG** في الموقع الذي تختاره. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +يضمن كتلة `using` تحرير المحول لأي موارد أصلية، وهو أمر مهم بشكل خاص في الخدمات التي تعمل لفترات طويلة. + +## الخطوة 5: التحقق من النتيجة – فحص سريع + +بعد انتهاء التحويل، من الجيد التأكد من وجود الملف وأن أبعاده كما هو متوقع. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +افتح `output.png` في أي عارض صور. يجب أن ترى HTML الأصلي معروضًا بدقة 1024 × 768 بكسل، بنص واضح وحواف ناعمة. + +## مثال كامل يعمل + +بجمع كل شيء معًا ستحصل على برنامج واحد مستقل: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +احفظ هذا كـ `Program.cs`، استبدل `YOUR_DIRECTORY` بمسار المجلد الفعلي، وشغّل `dotnet run`. سيقودك الـ console خلال كل مرحلة ويؤكد إنشاء ملف PNG. + +## أسئلة شائعة وحالات خاصة + +### “ماذا لو كان HTML الخاص بي يستخدم CSS أو صورًا خارجية؟” + +يقوم Aspose.HTML تلقائيًا بحل عناوين URL النسبية بناءً على دليل ملف المصدر. فقط تأكد من أن جميع الموارد يمكن الوصول إليها من نفس المجلد أو قدم عنوان URL مطلق. + +### “هل يمكنني عرض عنصر محدد بدلاً من الصفحة بأكملها؟” + +نعم. حمّل المستند، حدد العنصر باستخدام `htmlDocument.QuerySelector`، ومرّر ذلك العقدة إلى `ImageConverter`. نسخة API `Convert(IHTMLElement, string, ImageRenderingOptions)` تقوم بالمهمة. + +### “كيف يمكنني تغيير لون خلفية PNG؟” + +قم بتعيين `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (أو أي `System.Drawing.Color` تفضله) قبل استدعاء `Convert`. + +### “هل هناك طريقة للحصول على JPEG بدلاً من PNG؟” + +غيّر امتداد ملف الإخراج إلى `.jpg` واختياريًا اضبط `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. سيتبع المحول الصيغة المطلوبة. + +## نصائح الأداء + +- **أعد استخدام `ImageConverter`** إذا كنت تعالج العديد من ملفات HTML على دفعة؛ إن إنشائه مرة واحدة يقلل من الحمل الأصلي. +- **قصر حجم نافذة العرض** (`Width`/`Height`) على أصغر الأبعاد التي تحتاجها فعليًا—هذا يقلل من استهلاك الذاكرة بشكل كبير. +- **أوقف الميزات غير الضرورية** مثل `UseAntialiasing` للرسومات الخطية البسيطة؛ يسرّع ذلك عملية العرض دون فقدان ملحوظ في الجودة. + +## الخطوات التالية + +الآن بعد أن عرفت كيفية **إنشاء PNG من HTML**، فكر في توسيع سير العمل: + +- **معالجة دفعات** – تكرار عبر مجلد من ملفات HTML وإنشاء صور مصغرة لكل منها. +- **إنشاء HTML ديناميكي** – دمج قوالب Razor أو StringBuilder مع Aspose.HTML لإنتاج صور في الوقت الفعلي (مثل المخططات، الشهادات، أو الفواتير). +- **التكامل مع واجهات برمجة التطبيقات الويب** – توفير نقطة نهاية تستقبل HTML خام وتعيد تدفق PNG، مثالي لخدمات SaaS. + +كل واحدة من هذه الأفكار تعتمد على المفاهيم الأساسية التي غطيناها: تحميل `HTMLDocument`، تكوين `ImageRenderingOptions`، واستدعاء `ImageConverter`. + +--- + +### ملخص + +لقد قدمنا طريقة بسيطة وجاهزة للإنتاج **لإنشاء PNG من HTML** باستخدام Aspose.HTML for .NET. يوجهك الدليل خلال تثبيت الحزمة، تحميل HTML، ضبط الحجم والجودة، التحويل إلى PNG، والتحقق من النتيجة. مع وجود الكود الكامل، يمكنك تكييف النمط للوظائف الدفعية، خدمات الويب، أو أي سيناريو تحتاج فيه إلى **تحويل HTML إلى PNG**، **عرض HTML كصورة**، **تحديد حجم الصورة من HTML**، و **حفظ HTML كـ PNG**. برمجة سعيدة! + +--- + +![Diagram showing the flow from HTML file → Aspose.HTML → PNG output (create png from html)](placeholder-image.png "Create PNG from HTML flow diagram") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/chinese/net/generate-jpg-and-png-images/_index.md b/html/chinese/net/generate-jpg-and-png-images/_index.md index 50385b887..3772aa1f3 100644 --- a/html/chinese/net/generate-jpg-and-png-images/_index.md +++ b/html/chinese/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Aspose.HTML for .NET 提供了一种将 HTML 转换为图像的简单方法。 了解如何使用 Aspose.HTML for .NET 创建动态网页。本分步教程涵盖先决条件、命名空间以及将 HTML 渲染为图像。 ### [使用 Aspose.HTML 在 .NET 中通过 ImageDevice 生成 PNG 图像](./generate-png-images-by-imagedevice/) 学习使用 Aspose.HTML for .NET 来操作 HTML 文档、将 HTML 转换为图像等。分步教程，包含常见问题解答。 +### [使用 Aspose.HTML 完整 C# 指南从 HTML 生成 PNG 图像](./create-png-from-html-full-c-guide-with-aspose-html/) +深入学习如何使用 Aspose.HTML for .NET 将 HTML 转换为 PNG 图像，提供完整的 C# 示例和最佳实践。 ## 结论 @@ -52,4 +54,4 @@ Aspose.HTML for .NET 提供了一种将 HTML 转换为图像的简单方法。 {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/chinese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/chinese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..130bbca58 --- /dev/null +++ b/html/chinese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,257 @@ +--- +category: general +date: 2026-01-10 +description: 使用 Aspose.HTML 快速将 HTML 生成 PNG。了解如何将 HTML 转换为 PNG、将 HTML 渲染为图像、设置 HTML + 图像尺寸，以及在单个教程中将 HTML 保存为 PNG。 +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: zh +og_description: 使用 Aspose.HTML 将 HTML 生成 PNG。本指南展示了如何将 HTML 转换为 PNG、将 HTML 渲染为图像、设置图像大小以及将 + HTML 保存为 PNG。 +og_title: 从HTML创建PNG – 完整的C#教程 +tags: +- C# +- Aspose.HTML +- Image Rendering +title: 从HTML创建 PNG – 完整的 C# 指南（使用 Aspose.HTML） +url: /zh/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# 从 HTML 创建 PNG – 完整 C# 教程 + +是否曾需要 **从 HTML 创建 PNG**，却不确定哪个库能提供像素级完美的效果？你并不孤单。许多开发者在尝试将动态网页转换为静态图像（用于报告、缩略图或电子邮件预览）时都会遇到瓶颈。 + +在本指南中，我们将一步步演示一个实用的端到端解决方案，**将 HTML 转换为 PNG**、**将 HTML 渲染为图像**、**设置图像大小 HTML**，并最终 **将 HTML 保存为 PNG**——全部使用 Aspose.HTML for .NET。完成后，你将拥有一个可直接运行的控制台应用程序，输出恰好符合你指定尺寸的清晰 PNG 文件。 + +## 你需要准备的内容 + +在深入代码之前，请确保具备以下条件： + +- **.NET 6.0** 或更高版本（API 也支持 .NET Framework，但 .NET 6 是最佳选择）。 +- **Aspose.HTML for .NET** – 可通过 NuGet 获取 (`Install-Package Aspose.HTML`)。 +- 一个你想渲染的简单 **input.html** 文件。无论是静态模板还是完整的样式页面都可以。 +- Visual Studio、Rider 或任意你喜欢的编辑器。 + +无需额外依赖，无需无头浏览器，只需一个干净的 .NET 库。 + +## 第一步：创建 PNG from HTML – 项目设置 + +首先，新建一个控制台项目并引入 Aspose.HTML 包。 + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +包恢复完成后，打开 `Program.cs`。我们稍后会用完整示例替换默认内容，但现在先确认项目能够成功构建： + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +运行 `dotnet run`。如果看到问候信息，说明一切就绪。 + +## 第二步：Convert HTML to PNG – 加载文档 + +现在我们真正 **将 HTML 转换为 PNG**。第一步是创建指向源文件的 `HTMLDocument` 对象。 + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **为什么这一步很重要：** `HTMLDocument` 会解析标记、应用 CSS，并构建 Aspose.HTML 后续光栅化所需的 DOM。跳过此步骤，渲染器将无所适从。 + +## 第三步：Render HTML as Image – 定义图像渲染选项 + +渲染阶段是 **设置图像大小 HTML** 并微调质量（如抗锯齿）的地方。`ImageRenderingOptions` 类提供了细粒度的控制。 + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **小技巧：** 如果省略 `Width` 和 `Height`，Aspose.HTML 将使用页面的固有尺寸，对于现代响应式设计来说可能非常大。指定尺寸可以让 PNG 更轻量。 + +## 第四步：Save HTML as PNG – 执行转换 + +准备好文档和选项后，调用 `ImageConverter`。此步骤 **将 HTML 保存为 PNG** 到你指定的位置。 + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +`using` 块确保转换器释放任何本机资源，这在长时间运行的服务中尤为重要。 + +## 第五步：Verify the Result – 快速检查 + +转换完成后，最好确认文件是否存在且尺寸符合预期。 + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +在任意图像查看器中打开 `output.png`。你应该能看到原始 HTML 按 1024 × 768 像素渲染，文字清晰、边缘平滑。 + +## 完整工作示例 + +将所有代码整合在一起，即得到一个单文件、独立运行的程序： + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +将其保存为 `Program.cs`，将 `YOUR_DIRECTORY` 替换为实际文件夹路径，然后运行 `dotnet run`。控制台会逐步提示每个阶段，并确认 PNG 文件已创建。 + +## 常见问题与边缘情况 + +### “如果我的 HTML 使用了外部 CSS 或图片怎么办？” +Aspose.HTML 会根据源文件所在目录自动解析相对 URL。只需确保所有资源在同一文件夹下可访问，或使用绝对 URL。 + +### “能只渲染页面的某个特定元素吗？” +可以。加载文档后，使用 `htmlDocument.QuerySelector` 定位元素，并将该节点传给 `ImageConverter`。API 重载 `Convert(IHTMLElement, string, ImageRenderingOptions)` 正是为此设计。 + +### “如何更改 PNG 的背景颜色？” +在调用 `Convert` 之前设置 `renderingOptions.BackgroundColor = System.Drawing.Color.White;`（或任意 `System.Drawing.Color`）。 + +### “有没有办法生成 JPEG 而不是 PNG？” +只需将输出文件扩展名改为 `.jpg`，并可选地设置 `renderingOptions.ImageFormat = ImageFormat.Jpeg;`。转换器会遵循所请求的格式。 + +## 性能优化建议 + +- **复用 `ImageConverter`**：如果要批量处理大量 HTML 文件，创建一次后重复使用可降低本机开销。 +- **限制视口尺寸**（`Width`/`Height`）为实际需要的最小尺寸——这能显著降低内存占用。 +- **关闭不必要的特性**，如对简单线条图关闭 `UseAntialiasing`，可加快渲染速度且几乎不影响质量。 + +## 后续步骤 + +既然已经掌握了 **从 HTML 创建 PNG**，可以进一步扩展工作流： + +- **批量处理** – 遍历目录中的 HTML 文件，为每个生成缩略图。 +- **动态 HTML 生成** – 将 Razor 模板或 `StringBuilder` 与 Aspose.HTML 结合，实时生成图像（如图表、证书或发票）。 +- **与 Web API 集成** – 暴露一个接受原始 HTML 并返回 PNG 流的端点，完美适用于 SaaS 服务。 + +这些思路都基于我们已经讲解的核心概念：加载 `HTMLDocument`、配置 `ImageRenderingOptions`、调用 `ImageConverter`。 + +--- + +### TL;DR + +我们展示了一种直接、可投入生产的方式，使用 Aspose.HTML for .NET **从 HTML 创建 PNG**。教程涵盖了安装包、加载 HTML、设置尺寸与质量、转换为 PNG、以及验证结果的完整流程。拥有完整源码后，你可以将该模式应用于批处理任务、Web 服务或任何需要 **将 HTML 转换为 PNG**、**将 HTML 渲染为图像**、**设置图像大小 HTML**、以及 **将 HTML 保存为 PNG** 的场景。祝编码愉快！ + +--- + +![Diagram showing the flow from HTML file → Aspose.HTML → PNG output (create png from html)](placeholder-image.png "Create PNG from HTML flow diagram") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/czech/net/generate-jpg-and-png-images/_index.md b/html/czech/net/generate-jpg-and-png-images/_index.md index 16bb3b494..c69b854c5 100644 --- a/html/czech/net/generate-jpg-and-png-images/_index.md +++ b/html/czech/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Integrace Aspose.HTML for .NET do vašich projektů .NET je bezproblémová. Kni Naučte se vytvářet dynamické webové stránky pomocí Aspose.HTML for .NET. Tento výukový program krok za krokem pokrývá předpoklady, jmenné prostory a vykreslování HTML do obrázků. ### [Generujte obrázky PNG pomocí ImageDevice v .NET pomocí Aspose.HTML](./generate-png-images-by-imagedevice/) Naučte se používat Aspose.HTML pro .NET k manipulaci s dokumenty HTML, převodu HTML na obrázky a další. Výukový program krok za krokem s nejčastějšími dotazy. +### [Vytvořte PNG z HTML – Kompletní průvodce C# s Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Naučte se pomocí Aspose.HTML pro .NET převádět HTML na PNG v kompletním C# průvodci. ## Závěr @@ -52,4 +54,4 @@ Tak proč čekat? Začněte objevovat svět HTML na konverzi obrázků s Aspose. {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/czech/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/czech/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..1d1e7124c --- /dev/null +++ b/html/czech/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,261 @@ +--- +category: general +date: 2026-01-10 +description: Vytvořte PNG z HTML rychle pomocí Aspose.HTML. Naučte se, jak převést + HTML na PNG, renderovat HTML jako obrázek, nastavit velikost obrázku HTML a uložit + HTML jako PNG v jednom tutoriálu. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: cs +og_description: Vytvořte PNG z HTML pomocí Aspose.HTML. Tento průvodce ukazuje, jak + převést HTML na PNG, renderovat HTML jako obrázek, nastavit velikost obrázku HTML + a uložit HTML jako PNG. +og_title: Vytvořte PNG z HTML – kompletní C# tutoriál +tags: +- C# +- Aspose.HTML +- Image Rendering +title: Vytvořte PNG z HTML – Kompletní průvodce C# s Aspose.HTML +url: /cs/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Vytvoření PNG z HTML – Kompletní C# tutoriál + +Už jste někdy potřebovali **vytvořit PNG z HTML**, ale nebyli jste si jisti, která knihovna vám poskytne pixel‑dokonalé výsledky? Nejste v tom sami. Mnoho vývojářů narazí na problém, když se snaží převést dynamickou webovou stránku na statický obrázek pro zprávy, náhledy nebo e‑mailové ukázky. + +V tomto průvodci vás provedeme praktickým, end‑to‑end řešením, které **převádí HTML na PNG**, **vykresluje HTML jako obrázek**, umožňuje vám **nastavit velikost obrázku HTML** a nakonec **uloží HTML jako PNG** — vše pomocí Aspose.HTML pro .NET. Na konci budete mít připravenou konzolovou aplikaci, která vygeneruje ostrý PNG soubor přesně ve velikosti, kterou zadáte. + +## Co budete potřebovat + +- **.NET 6.0** nebo novější (API funguje i na .NET Framework, ale .NET 6 je ideální). +- **Aspose.HTML for .NET** – můžete jej získat z NuGet (`Install-Package Aspose.HTML`). +- Jednoduchý soubor **input.html**, který chcete vykreslit. Funguje cokoliv od statické šablony po plně stylovanou stránku. +- Visual Studio, Rider nebo jakýkoli editor, který preferujete. + +Žádné další závislosti, žádné headless prohlížeče, jen čistá .NET knihovna. + +## Krok 1: Vytvoření PNG z HTML – Nastavení projektu + +Nejprve vytvořte nový konzolový projekt a přidejte balíček Aspose.HTML. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Jakmile je balíček obnoven, otevřete `Program.cs`. Později nahradíme výchozí obsah kompletním příkladem, ale prozatím jen ověřte, že se projekt sestaví: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Spusťte `dotnet run`. Pokud se zobrazí uvítací zpráva, můžete pokračovat. + +## Krok 2: Převod HTML na PNG – Načtení dokumentu + +Nyní skutečně **převádíme HTML na PNG**. Prvním krokem je získat objekt `HTMLDocument`, který ukazuje na náš zdrojový soubor. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Why this matters:** `HTMLDocument` parses the markup, applies CSS, and builds a DOM that Aspose.HTML can later rasterize. Skipping this step means the renderer has nothing to work with. + +## Krok 3: Vykreslení HTML jako obrázku – Definice možností vykreslování obrázku + +Vykreslování je místo, kde **nastavujete velikost obrázku HTML** a ladíte nastavení kvality, jako je antialiasing. Třída `ImageRenderingOptions` vám dává detailní kontrolu. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Pro tip:** Pokud vynecháte `Width` a `Height`, Aspose.HTML použije intrinsickou velikost stránky, která může být u moderních responzivních designů obrovská. Specifikování rozměrů udrží PNG lehký. + +## Krok 4: Uložení HTML jako PNG – Provedení konverze + +S připraveným dokumentem a možnostmi zavoláme `ImageConverter`. Tento krok **uloží HTML jako PNG** na zvolené místo. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +Blok `using` zajišťuje, že konvertor uvolní všechny nativní prostředky, což je obzvláště důležité u dlouho běžících služeb. + +## Krok 5: Ověření výsledku – Rychlá kontrola + +Po dokončení konverze je dobré ověřit, že soubor existuje a má očekávané rozměry. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Otevřete `output.png` v libovolném prohlížeči obrázků. Měli byste vidět původní HTML vykreslené v rozlišení 1024 × 768 pixelů, s ostrým textem a hladkými hranami. + +## Kompletní funkční příklad + +Sestavením všech částí získáte jeden, samostatný program: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Uložte tento soubor jako `Program.cs`, nahraďte `YOUR_DIRECTORY` skutečnou cestou ke složce a spusťte `dotnet run`. Konzole vás provede každým krokem a potvrdí vytvoření PNG souboru. + +## Časté otázky a okrajové případy + +### „Co když moje HTML používá externí CSS nebo obrázky?“ + +Aspose.HTML automaticky řeší relativní URL na základě adresáře zdrojového souboru. Jen se ujistěte, že všechny assety jsou dostupné ze stejné složky nebo poskytněte absolutní URL. + +### „Mohu vykreslit konkrétní prvek místo celé stránky?“ + +Ano. Načtěte dokument, najděte prvek pomocí `htmlDocument.QuerySelector` a předávejte tento uzel `ImageConverter`. Přetížení API `Convert(IHTMLElement, string, ImageRenderingOptions)` to umožňuje. + +### „Jak změním barvu pozadí PNG?“ + +Nastavte `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (nebo libovolnou `System.Drawing.Color`, kterou chcete) před voláním `Convert`. + +### „Je možné získat JPEG místo PNG?“ + +Změňte příponu výstupního souboru na `.jpg` a volitelně nastavte `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. Konvertor respektuje požadovaný formát. + +## Tipy pro výkon + +- **Reuse the `ImageConverter`** pokud zpracováváte mnoho HTML souborů najednou; vytvoření jedné instance snižuje nativní režii. +- **Limit the viewport size** (`Width`/`Height`) na nejmenší rozměry, které skutečně potřebujete — tím výrazně snížíte spotřebu paměti. +- **Turn off unnecessary features** jako `UseAntialiasing` pro jednoduchou čárovou grafiku; urychlí to vykreslování bez znatelné ztráty kvality. + +## Další kroky + +Nyní, když víte, jak **vytvořit PNG z HTML**, zvažte rozšíření workflow: + +- **Batch processing** – procházet adresář s HTML soubory a generovat miniatury pro každý. +- **Dynamic HTML generation** – kombinovat Razor šablony nebo `StringBuilder` s Aspose.HTML pro tvorbu obrázků za běhu (např. grafy, certifikáty nebo faktury). +- **Integration with web APIs** – vystavit endpoint, který přijímá surové HTML a vrací PNG stream, ideální pro SaaS služby. + +Všechny tyto nápady staví na stejných základních konceptech, které jsme probírali: načtení `HTMLDocument`, konfigurace `ImageRenderingOptions` a volání `ImageConverter`. + +--- + +### TL;DR + +Ukázali jsme jednoduchý, produkčně připravený způsob, jak **vytvořit PNG z HTML** pomocí Aspose.HTML pro .NET. Tutoriál vás provede instalací balíčku, načtením HTML, nastavením velikosti a kvality, konverzí do PNG a ověřením výsledku. S kompletním zdrojovým kódem můžete tento vzor přizpůsobit dávkovým úlohám, webovým službám nebo jakémukoli scénáři, kde potřebujete **převést HTML na PNG**, **vykreslit HTML jako obrázek**, **nastavit velikost obrázku HTML** a **uložit HTML jako PNG**. Šťastné kódování! + +--- + +![Diagram znázorňující tok od souboru HTML → Aspose.HTML → výstup PNG (vytvořit png z html)](placeholder-image.png "Diagram toku vytvoření PNG z HTML") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/dutch/net/generate-jpg-and-png-images/_index.md b/html/dutch/net/generate-jpg-and-png-images/_index.md index 739c8bd98..ed88a8d6a 100644 --- a/html/dutch/net/generate-jpg-and-png-images/_index.md +++ b/html/dutch/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Het integreren van Aspose.HTML voor .NET in uw .NET-projecten is probleemloos. D Leer hoe u dynamische webpagina's maakt met Aspose.HTML voor .NET. Deze stapsgewijze tutorial behandelt vereisten, naamruimten en het renderen van HTML naar afbeeldingen. ### [Genereer PNG-afbeeldingen via ImageDevice in .NET met Aspose.HTML](./generate-png-images-by-imagedevice/) Leer hoe u Aspose.HTML voor .NET kunt gebruiken om HTML-documenten te bewerken, HTML naar afbeeldingen te converteren en meer. Stapsgewijze tutorial met veelgestelde vragen. +### [Maak PNG van HTML – volledige C#-handleiding met Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Leer stap voor stap PNG-afbeeldingen genereren vanuit HTML met een volledige C#-handleiding voor Aspose.HTML. ## Conclusie @@ -52,4 +54,4 @@ Dus, waarom wachten? Begin vandaag nog met het verkennen van de wereld van HTML {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/dutch/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/dutch/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..cf6cfd00c --- /dev/null +++ b/html/dutch/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,261 @@ +--- +category: general +date: 2026-01-10 +description: Maak snel PNG's van HTML met Aspose.HTML. Leer hoe je HTML naar PNG converteert, + HTML rendert als afbeelding, de afbeeldingsgrootte van HTML instelt en HTML opslaat + als PNG in één tutorial. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: nl +og_description: Maak PNG van HTML met Aspose.HTML. Deze gids laat zien hoe je HTML + naar PNG converteert, HTML rendert als afbeelding, de afbeeldingsgrootte van HTML + instelt en HTML opslaat als PNG. +og_title: PNG maken van HTML – Complete C#‑handleiding +tags: +- C# +- Aspose.HTML +- Image Rendering +title: PNG maken van HTML – Volledige C#‑gids met Aspose.HTML +url: /nl/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Maak PNG van HTML – Complete C# Tutorial + +Heb je ooit **PNG van HTML maken** nodig gehad, maar wist je niet welke bibliotheek pixel‑perfecte resultaten zou leveren? Je bent niet de enige. Veel ontwikkelaars lopen tegen een muur aan wanneer ze een dynamische webpagina willen omzetten naar een statische afbeelding voor rapporten, miniaturen of e‑mailvoorbeelden. + +In deze gids lopen we een praktische, end‑to‑end oplossing door die **HTML naar PNG converteert**, **HTML als afbeelding rendert**, je **de afbeeldingsgrootte van HTML kunt instellen**, en uiteindelijk **HTML als PNG opslaat**—alles met Aspose.HTML voor .NET. Aan het einde heb je een kant‑klaar console‑applicatie die een scherpe PNG‑file genereert met precies de door jou opgegeven grootte. + +## Wat je nodig hebt + +- **.NET 6.0** of later (de API werkt ook op .NET Framework, maar .NET 6 is de ideale keuze). +- **Aspose.HTML for .NET** – je kunt het ophalen via NuGet (`Install-Package Aspose.HTML`). +- Een simpel **input.html**‑bestand dat je wilt renderen. Alles van een statisch sjabloon tot een volledig gestylede pagina werkt. +- Visual Studio, Rider, of elke editor die je verkiest. + +Geen extra afhankelijkheden, geen headless browsers, alleen een schone .NET‑bibliotheek. + +## Stap 1: PNG van HTML maken – Projectconfiguratie + +Eerst maak je een nieuw console‑project aan en haal je het Aspose.HTML‑pakket binnen. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Zodra het pakket is hersteld, open je `Program.cs`. We zullen later de standaardinhoud vervangen door het volledige voorbeeld, maar bevestig nu eerst dat het project bouwt: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Voer `dotnet run` uit. Als je de begroeting ziet, ben je klaar om verder te gaan. + +## Stap 2: HTML naar PNG converteren – Document laden + +Nu gaan we daadwerkelijk **HTML naar PNG converteren**. Het eerste wat we nodig hebben is een `HTMLDocument`‑object dat naar ons bronbestand wijst. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Waarom dit belangrijk is:** `HTMLDocument` parseert de markup, past CSS toe en bouwt een DOM die Aspose.HTML later kan rasteren. Als je deze stap overslaat, heeft de renderer niets om mee te werken. + +## Stap 3: HTML als afbeelding renderen – Afbeeldingsrenderopties definiëren + +Renderen is waar je **de afbeeldingsgrootte van HTML instelt** en kwaliteitinstellingen zoals antialiasing aanpast. De `ImageRenderingOptions`‑klasse geeft je fijnmazige controle. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Pro tip:** Als je `Width` en `Height` weglaten, gebruikt Aspose.HTML de intrinsieke paginagrootte, die enorm kan zijn voor moderne responsive ontwerpen. Het specificeren van afmetingen houdt de PNG lichtgewicht. + +## Stap 4: HTML als PNG opslaan – Conversie uitvoeren + +Met het document en de opties klaar, roepen we `ImageConverter` aan. Deze stap **slaat HTML op als PNG** naar de door jou gekozen locatie. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +Het `using`‑blok zorgt ervoor dat de converter eventuele native resources vrijgeeft, wat vooral belangrijk is in langdurige services. + +## Stap 5: Resultaat verifiëren – Snelle controle + +Nadat de conversie is voltooid, is het een goed idee om te bevestigen dat het bestand bestaat en de verwachte afmetingen heeft. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Open `output.png` in een willekeurige afbeeldingsviewer. Je zou je originele HTML moeten zien gerenderd op 1024 × 768 pixels, met scherpe tekst en vloeiende randen. + +## Volledig werkend voorbeeld + +Als je alles samenvoegt, krijg je een enkel, zelfstandig programma: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Sla dit op als `Program.cs`, vervang `YOUR_DIRECTORY` door het daadwerkelijke mappad, en voer `dotnet run` uit. De console leidt je door elke fase en bevestigt de creatie van het PNG‑bestand. + +## Veelgestelde vragen & randgevallen + +### “Wat als mijn HTML externe CSS of afbeeldingen gebruikt?” + +Aspose.HTML lost automatisch relatieve URL's op op basis van de map van het bronbestand. Zorg er gewoon voor dat alle assets bereikbaar zijn vanuit dezelfde map of geef een absolute URL op. + +### “Kan ik een specifiek element renderen in plaats van de hele pagina?” + +Ja. Laad het document, vind het element met `htmlDocument.QuerySelector`, en geef die node door aan `ImageConverter`. De API‑overload `Convert(IHTMLElement, string, ImageRenderingOptions)` doet het werk. + +### “Hoe wijzig ik de achtergrondkleur van de PNG?” + +Stel `renderingOptions.BackgroundColor = System.Drawing.Color.White;` in (of een andere `System.Drawing.Color` naar keuze) voordat je `Convert` aanroept. + +### “Is er een manier om een JPEG in plaats van PNG te krijgen?” + +Verander de extensie van het uitvoerbestand naar `.jpg` en stel eventueel `renderingOptions.ImageFormat = ImageFormat.Jpeg;` in. De converter respecteert het aangevraagde formaat. + +## Prestatietips + +- **Herbruik de `ImageConverter`** als je veel HTML‑bestanden in één batch verwerkt; één keer aanmaken vermindert native overhead. +- **Beperk de viewport‑grootte** (`Width`/`Height`) tot de kleinste afmetingen die je daadwerkelijk nodig hebt—dit vermindert het geheugenverbruik drastisch. +- **Schakel onnodige functies uit** zoals `UseAntialiasing` voor eenvoudige lijntekeningen; dit versnelt het renderen zonder merkbaar kwaliteitsverlies. + +## Volgende stappen + +Nu je weet hoe je **PNG van HTML maakt**, overweeg dan om de workflow uit te breiden: + +- **Batchverwerking** – loop door een map met HTML‑bestanden en genereer miniaturen voor elk. +- **Dynamische HTML‑generatie** – combineer Razor‑templates of StringBuilder met Aspose.HTML om on‑the‑fly afbeeldingen te produceren (bijv. grafieken, certificaten of facturen). +- **Integratie met web‑API's** – exposeer een endpoint dat ruwe HTML accepteert en een PNG‑stream teruggeeft, perfect voor SaaS‑diensten. + +Elk van deze ideeën bouwt voort op dezelfde kernconcepten die we hebben behandeld: een `HTMLDocument` laden, `ImageRenderingOptions` configureren, en `ImageConverter` aanroepen. + +--- + +### TL;DR + +We hebben een eenvoudige, productie‑klare manier laten zien om **PNG van HTML te maken** met Aspose.HTML voor .NET. De tutorial leidt je door het installeren van het pakket, het laden van HTML, het instellen van grootte en kwaliteit, het converteren naar PNG, en het verifiëren van het resultaat. Met de volledige broncode kun je het patroon aanpassen voor batch‑taken, webservices, of elke situatie waarin je **HTML naar PNG wilt converteren**, **HTML als afbeelding wilt renderen**, **de afbeeldingsgrootte van HTML wilt instellen**, en **HTML als PNG wilt opslaan**. Veel programmeerplezier! + +--- + +![Diagram dat de stroom toont van HTML‑bestand → Aspose.HTML → PNG‑output (maak png van html)](placeholder-image.png "Diagram van PNG‑creatie vanuit HTML") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/english/net/generate-jpg-and-png-images/_index.md b/html/english/net/generate-jpg-and-png-images/_index.md index 28011c7de..fc277899a 100644 --- a/html/english/net/generate-jpg-and-png-images/_index.md +++ b/html/english/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Integrating Aspose.HTML for .NET into your .NET projects is hassle-free. The lib Learn how to create dynamic web pages using Aspose.HTML for .NET. This step-by-step tutorial covers prerequisites, namespaces, and rendering HTML to images. ### [Generate PNG Images by ImageDevice in .NET with Aspose.HTML](./generate-png-images-by-imagedevice/) Learn to use Aspose.HTML for .NET to manipulate HTML documents, convert HTML to images, and more. Step-by-step tutorial with FAQs. +### [Create PNG from HTML – Full C# Guide with Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Learn how to create PNG images from HTML using Aspose.HTML in C#. This comprehensive guide covers setup, code examples, and best practices. ## Conclusion @@ -52,4 +54,4 @@ So, why wait? Start exploring the world of HTML to image conversion with Aspose. {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/english/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/english/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..6c222cd9e --- /dev/null +++ b/html/english/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,258 @@ +--- +category: general +date: 2026-01-10 +description: Create PNG from HTML quickly using Aspose.HTML. Learn how to convert + HTML to PNG, render HTML as image, set image size HTML, and save HTML as PNG in + a single tutorial. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: en +og_description: Create PNG from HTML with Aspose.HTML. This guide shows how to convert + HTML to PNG, render HTML as image, set image size HTML, and save HTML as PNG. +og_title: Create PNG from HTML – Complete C# Tutorial +tags: +- C# +- Aspose.HTML +- Image Rendering +title: Create PNG from HTML – Full C# Guide with Aspose.HTML +url: /net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Create PNG from HTML – Complete C# Tutorial + +Ever needed to **create PNG from HTML** but weren’t sure which library would give you pixel‑perfect results? You’re not alone. Many developers hit a wall when they try to turn a dynamic web page into a static image for reports, thumbnails, or email previews. + +In this guide we’ll walk through a practical, end‑to‑end solution that **converts HTML to PNG**, **renders HTML as image**, lets you **set image size HTML**, and finally **saves HTML as PNG**—all with Aspose.HTML for .NET. By the end you’ll have a ready‑to‑run console app that spits out a crisp PNG file exactly the size you specify. + +## What You’ll Need + +Before we dive into code, make sure you have the following: + +- **.NET 6.0** or later (the API works on .NET Framework too, but .NET 6 is the sweet spot). +- **Aspose.HTML for .NET** – you can grab it from NuGet (`Install-Package Aspose.HTML`). +- A simple **input.html** file you want to render. Anything from a static template to a fully‑styled page works. +- Visual Studio, Rider, or any editor you prefer. + +No extra dependencies, no headless browsers, just a clean .NET library. + +## Step 1: Create PNG from HTML – Project Setup + +First, spin up a new console project and pull in the Aspose.HTML package. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Once the package is restored, open `Program.cs`. We’ll replace the default content with the full example later, but for now just confirm the project builds: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Run `dotnet run`. If you see the greeting, you’re good to go. + +## Step 2: Convert HTML to PNG – Load the Document + +Now we actually **convert HTML to PNG**. The first thing we need is an `HTMLDocument` object that points at our source file. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Why this matters:** `HTMLDocument` parses the markup, applies CSS, and builds a DOM that Aspose.HTML can later rasterize. Skipping this step means the renderer has nothing to work with. + +## Step 3: Render HTML as Image – Define Image Rendering Options + +Rendering is where you **set image size HTML** and tweak quality settings like antialiasing. The `ImageRenderingOptions` class gives you fine‑grained control. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Pro tip:** If you omit `Width` and `Height`, Aspose.HTML will use the page’s intrinsic size, which can be huge for modern responsive designs. Specifying dimensions keeps the PNG lightweight. + +## Step 4: Save HTML as PNG – Perform the Conversion + +With the document and options ready, we call `ImageConverter`. This step **saves HTML as PNG** to the location you choose. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +The `using` block ensures the converter releases any native resources, which is especially important in long‑running services. + +## Step 5: Verify the Result – Quick Check + +After the conversion finishes, it’s a good idea to confirm the file exists and has the expected dimensions. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Open `output.png` in any image viewer. You should see your original HTML rendered at 1024 × 768 pixels, with crisp text and smooth edges. + +## Full Working Example + +Putting everything together you get a single, self‑contained program: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Save this as `Program.cs`, replace `YOUR_DIRECTORY` with the actual folder path, and run `dotnet run`. The console will walk you through each stage and confirm the PNG file’s creation. + +## Common Questions & Edge Cases + +### “What if my HTML uses external CSS or images?” +Aspose.HTML automatically resolves relative URLs based on the directory of the source file. Just make sure all assets are reachable from the same folder or provide an absolute URL. + +### “Can I render a specific element instead of the whole page?” +Yes. Load the document, locate the element with `htmlDocument.QuerySelector`, and pass that node to `ImageConverter`. The API overload `Convert(IHTMLElement, string, ImageRenderingOptions)` does the trick. + +### “How do I change the background color of the PNG?” +Set `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (or any `System.Drawing.Color` you like) before calling `Convert`. + +### “Is there a way to get a JPEG instead of PNG?” +Swap the output file extension to `.jpg` and optionally set `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. The converter will honor the requested format. + +## Performance Tips + +- **Reuse the `ImageConverter`** if you’re processing many HTML files in a batch; creating it once reduces native overhead. +- **Limit the viewport size** (`Width`/`Height`) to the smallest dimensions you actually need—this cuts memory usage dramatically. +- **Turn off unnecessary features** like `UseAntialiasing` for simple line art; it speeds up rendering without noticeable quality loss. + +## Next Steps + +Now that you know how to **create PNG from HTML**, consider extending the workflow: + +- **Batch processing** – loop over a directory of HTML files and generate thumbnails for each. +- **Dynamic HTML generation** – combine Razor templates or StringBuilder with Aspose.HTML to produce on‑the‑fly images (think charts, certificates, or invoices). +- **Integration with web APIs** – expose an endpoint that accepts raw HTML and returns a PNG stream, perfect for SaaS services. + +Each of these ideas builds on the same core concepts we covered: loading an `HTMLDocument`, configuring `ImageRenderingOptions`, and calling `ImageConverter`. + +--- + +### TL;DR + +We’ve shown a straightforward, production‑ready way to **create PNG from HTML** using Aspose.HTML for .NET. The tutorial walks you through installing the package, loading HTML, setting size and quality, converting to PNG, and verifying the result. With the full source code at hand, you can adapt the pattern to batch jobs, web services, or any scenario where you need to **convert HTML to PNG**, **render HTML as image**, **set image size HTML**, and **save HTML as PNG**. Happy coding! + +--- + +![Diagram showing the flow from HTML file → Aspose.HTML → PNG output (create png from html)](placeholder-image.png "Create PNG from HTML flow diagram") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/french/net/generate-jpg-and-png-images/_index.md b/html/french/net/generate-jpg-and-png-images/_index.md index 59d76b924..8c96a40ed 100644 --- a/html/french/net/generate-jpg-and-png-images/_index.md +++ b/html/french/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ L'intégration d'Aspose.HTML pour .NET dans vos projets .NET est simple. La bibl Découvrez comment créer des pages Web dynamiques à l'aide d'Aspose.HTML pour .NET. Ce didacticiel étape par étape couvre les prérequis, les espaces de noms et le rendu HTML en images. ### [Générer des images PNG par ImageDevice dans .NET avec Aspose.HTML](./generate-png-images-by-imagedevice/) Apprenez à utiliser Aspose.HTML pour .NET pour manipuler des documents HTML, convertir du HTML en images, etc. Tutoriel étape par étape avec FAQ. +### [Créer un PNG à partir de HTML – Guide complet C# avec Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Apprenez à générer des images PNG à partir de HTML en C# avec Aspose.HTML, étape par étape. ## Conclusion @@ -52,4 +54,4 @@ Alors, pourquoi attendre ? Commencez dès aujourd'hui à explorer le monde de la {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/french/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/french/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..cf07d1abc --- /dev/null +++ b/html/french/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,261 @@ +--- +category: general +date: 2026-01-10 +description: Créez un PNG à partir de HTML rapidement avec Aspose.HTML. Apprenez comment + convertir du HTML en PNG, rendre le HTML en image, définir la taille de l'image + HTML et enregistrer le HTML en PNG dans un seul tutoriel. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: fr +og_description: Créer un PNG à partir de HTML avec Aspose.HTML. Ce guide montre comment + convertir du HTML en PNG, rendre le HTML en image, définir la taille de l'image + HTML et enregistrer le HTML au format PNG. +og_title: Créer un PNG à partir de HTML – Tutoriel complet C# +tags: +- C# +- Aspose.HTML +- Image Rendering +title: Créer un PNG à partir de HTML – Guide complet C# avec Aspose.HTML +url: /fr/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Créer un PNG à partir de HTML – Tutoriel complet C# + +Vous avez déjà eu besoin de **créer un PNG à partir de HTML** mais vous n'étiez pas sûr de la bibliothèque qui vous offrirait des résultats pixel‑parfait ? Vous n'êtes pas seul. De nombreux développeurs se heurtent à un mur lorsqu'ils essaient de transformer une page web dynamique en image statique pour des rapports, des vignettes ou des aperçus d'e‑mail. + +Dans ce guide, nous parcourrons une solution pratique, de bout en bout, qui **convertit HTML en PNG**, **rendu HTML en image**, vous permet de **définir la taille de l'image HTML**, et enfin **enregistre HTML en PNG** — le tout avec Aspose.HTML pour .NET. À la fin, vous disposerez d’une application console prête à l’emploi qui génère un fichier PNG net exactement à la taille que vous spécifiez. + +## Ce dont vous avez besoin + +- **.NET 6.0** ou version ultérieure (l'API fonctionne également sur .NET Framework, mais .NET 6 est le meilleur choix). +- **Aspose.HTML for .NET** – vous pouvez l'obtenir via NuGet (`Install-Package Aspose.HTML`). +- Un simple fichier **input.html** que vous souhaitez rendre. Tout, d'un modèle statique à une page entièrement stylisée, fonctionne. +- Visual Studio, Rider, ou tout éditeur de votre choix. + +Aucune dépendance supplémentaire, aucun navigateur sans tête, juste une bibliothèque .NET propre. + +## Étape 1 : Créer un PNG à partir de HTML – Configuration du projet + +Tout d'abord, créez un nouveau projet console et ajoutez le package Aspose.HTML. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Une fois le package restauré, ouvrez `Program.cs`. Nous remplacerons le contenu par défaut par l'exemple complet plus tard, mais pour l'instant, assurez‑vous simplement que le projet se compile : + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Exécutez `dotnet run`. Si vous voyez le message de bienvenue, tout est prêt. + +## Étape 2 : Convertir HTML en PNG – Charger le document + +Nous allons maintenant réellement **convertir HTML en PNG**. La première chose dont nous avons besoin est un objet `HTMLDocument` qui pointe vers notre fichier source. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Pourquoi c’est important :** `HTMLDocument` analyse le balisage, applique le CSS et construit un DOM que Aspose.HTML pourra ensuite rasteriser. Ignorer cette étape signifie que le moteur de rendu n’a rien à traiter. + +## Étape 3 : Rendre HTML en image – Définir les options de rendu d’image + +Le rendu est l’endroit où vous **définissez la taille de l'image HTML** et ajustez les paramètres de qualité comme l'antialiasing. La classe `ImageRenderingOptions` vous offre un contrôle granulaire. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Astuce :** Si vous omettez `Width` et `Height`, Aspose.HTML utilisera la taille intrinsèque de la page, ce qui peut être énorme pour les conceptions réactives modernes. Spécifier les dimensions maintient le PNG léger. + +## Étape 4 : Enregistrer HTML en PNG – Effectuer la conversion + +Avec le document et les options prêts, nous appelons `ImageConverter`. Cette étape **enregistre HTML en PNG** à l’emplacement que vous choisissez. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +Le bloc `using` garantit que le convertisseur libère toutes les ressources natives, ce qui est particulièrement important dans les services de longue durée. + +## Étape 5 : Vérifier le résultat – Vérification rapide + +Une fois la conversion terminée, il est judicieux de confirmer que le fichier existe et possède les dimensions attendues. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Ouvrez `output.png` dans n’importe quel visualiseur d’image. Vous devriez voir votre HTML original rendu à 1024 × 768 pixels, avec un texte net et des bords lisses. + +## Exemple complet fonctionnel + +En réunissant tous les éléments, vous obtenez un programme unique et autonome : + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Enregistrez ceci sous le nom `Program.cs`, remplacez `YOUR_DIRECTORY` par le chemin réel du dossier, et exécutez `dotnet run`. La console vous guidera à travers chaque étape et confirmera la création du fichier PNG. + +## Questions fréquentes & cas particuliers + +### « Et si mon HTML utilise du CSS ou des images externes ? » + +Aspose.HTML résout automatiquement les URL relatives en fonction du répertoire du fichier source. Assurez‑vous simplement que tous les actifs sont accessibles depuis le même dossier ou fournissez une URL absolue. + +### « Puis‑je rendre un élément spécifique au lieu de la page entière ? » + +Oui. Chargez le document, localisez l’élément avec `htmlDocument.QuerySelector`, et passez ce nœud à `ImageConverter`. La surcharge d’API `Convert(IHTMLElement, string, ImageRenderingOptions)` fait le travail. + +### « Comment changer la couleur de fond du PNG ? » + +Définissez `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (ou toute autre `System.Drawing.Color` de votre choix) avant d’appeler `Convert`. + +### « Existe‑t‑il un moyen d’obtenir un JPEG au lieu d’un PNG ? » + +Modifiez l’extension du fichier de sortie en `.jpg` et, éventuellement, définissez `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. Le convertisseur respectera le format demandé. + +## Conseils de performance + +- **Réutilisez le `ImageConverter`** si vous traitez de nombreux fichiers HTML en lot ; le créer une seule fois réduit la surcharge native. +- **Limitez la taille du viewport** (`Width`/`Height`) aux plus petites dimensions réellement nécessaires — cela réduit considérablement l’utilisation de mémoire. +- **Désactivez les fonctionnalités inutiles** comme `UseAntialiasing` pour les dessins simples ; cela accélère le rendu sans perte de qualité perceptible. + +## Prochaines étapes + +Maintenant que vous savez comment **créer un PNG à partir de HTML**, envisagez d’étendre le flux de travail : + +- **Traitement par lots** – parcourir un répertoire de fichiers HTML et générer des vignettes pour chacun. +- **Génération dynamique de HTML** – combiner des modèles Razor ou `StringBuilder` avec Aspose.HTML pour produire des images à la volée (pensées graphiques, certificats ou factures). +- **Intégration avec des API web** – exposer un point de terminaison qui accepte du HTML brut et renvoie un flux PNG, idéal pour les services SaaS. + +Chacune de ces idées repose sur les mêmes concepts de base que nous avons abordés : charger un `HTMLDocument`, configurer `ImageRenderingOptions`, et appeler `ImageConverter`. + +--- + +### TL;DR + +Nous avons présenté une méthode simple et prête pour la production afin de **créer un PNG à partir de HTML** en utilisant Aspose.HTML pour .NET. Le tutoriel vous guide à travers l’installation du package, le chargement du HTML, la définition de la taille et de la qualité, la conversion en PNG et la vérification du résultat. Avec le code source complet à portée de main, vous pouvez adapter ce modèle aux travaux par lots, aux services web ou à tout scénario où vous devez **convertir HTML en PNG**, **rendre HTML en image**, **définir la taille de l'image HTML**, et **enregistrer HTML en PNG**. Bon codage ! + +--- + +![Diagram showing the flow from HTML file → Aspose.HTML → PNG output (create png from html)](placeholder-image.png "Create PNG from HTML flow diagram") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/german/net/generate-jpg-and-png-images/_index.md b/html/german/net/generate-jpg-and-png-images/_index.md index c4609fed9..6173e028b 100644 --- a/html/german/net/generate-jpg-and-png-images/_index.md +++ b/html/german/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Die Integration von Aspose.HTML für .NET in Ihre .NET-Projekte ist problemlos. Erfahren Sie, wie Sie mit Aspose.HTML für .NET dynamische Webseiten erstellen. Dieses Schritt-für-Schritt-Tutorial behandelt Voraussetzungen, Namespaces und das Rendern von HTML in Bilder. ### [Generieren Sie PNG-Bilder mit ImageDevice in .NET mit Aspose.HTML](./generate-png-images-by-imagedevice/) Erfahren Sie, wie Sie mit Aspose.HTML für .NET HTML-Dokumente bearbeiten, HTML in Bilder konvertieren und vieles mehr. Schritt-für-Schritt-Anleitung mit FAQs. +### [PNG aus HTML erstellen – Vollständiger C#-Leitfaden mit Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Erfahren Sie, wie Sie mit Aspose.HTML PNG-Bilder aus HTML in C# vollständig generieren – Schritt‑für‑Schritt‑Anleitung. ## Abschluss @@ -52,4 +54,4 @@ Worauf also warten? Entdecken Sie noch heute die Welt der HTML-zu-Bild-Konvertie {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/german/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/german/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..bf8959d2b --- /dev/null +++ b/html/german/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,261 @@ +--- +category: general +date: 2026-01-10 +description: Erstellen Sie schnell PNG aus HTML mit Aspose.HTML. Erfahren Sie, wie + Sie HTML in PNG konvertieren, HTML als Bild rendern, die Bildgröße von HTML festlegen + und HTML als PNG speichern – alles in einem einzigen Tutorial. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: de +og_description: Erstellen Sie PNG aus HTML mit Aspose.HTML. Dieser Leitfaden zeigt, + wie man HTML in PNG konvertiert, HTML als Bild rendert, die Bildgröße von HTML festlegt + und HTML als PNG speichert. +og_title: PNG aus HTML erstellen – Vollständiges C#‑Tutorial +tags: +- C# +- Aspose.HTML +- Image Rendering +title: PNG aus HTML erstellen – Vollständiger C#‑Leitfaden mit Aspose.HTML +url: /de/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# PNG aus HTML erstellen – Vollständiges C#‑Tutorial + +Haben Sie jemals **PNG aus HTML erstellen** müssen, waren sich aber nicht sicher, welche Bibliothek pixelgenaue Ergebnisse liefert? Sie sind nicht allein. Viele Entwickler stoßen an Grenzen, wenn sie versuchen, eine dynamische Webseite in ein statisches Bild für Berichte, Miniaturansichten oder E‑Mail‑Vorschauen zu verwandeln. + +In diesem Leitfaden führen wir Sie durch eine praktische End‑to‑End‑Lösung, die **HTML in PNG konvertiert**, **HTML als Bild rendert**, Ihnen ermöglicht, **Bildgröße HTML festzulegen**, und schließlich **HTML als PNG speichert** – alles mit Aspose.HTML für .NET. Am Ende haben Sie eine sofort ausführbare Konsolen‑App, die eine scharfe PNG‑Datei exakt in der von Ihnen angegebenen Größe erzeugt. + +## Was Sie benötigen + +- **.NET 6.0** oder höher (die API funktioniert auch unter .NET Framework, aber .NET 6 ist der optimale Punkt). +- **Aspose.HTML for .NET** – Sie können es von NuGet holen (`Install-Package Aspose.HTML`). +- Eine einfache **input.html**‑Datei, die Sie rendern möchten. Alles von einer statischen Vorlage bis zu einer vollgestylten Seite funktioniert. +- Visual Studio, Rider oder ein beliebiger Editor Ihrer Wahl. + +Keine zusätzlichen Abhängigkeiten, keine Headless‑Browser, nur eine saubere .NET‑Bibliothek. + +## Schritt 1: PNG aus HTML erstellen – Projekt‑Setup + +Zuerst erstellen Sie ein neues Konsolenprojekt und binden das Aspose.HTML‑Paket ein. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Sobald das Paket wiederhergestellt ist, öffnen Sie `Program.cs`. Wir werden den Standardinhalt später durch das vollständige Beispiel ersetzen, aber bestätigen Sie jetzt zunächst, dass das Projekt kompiliert. + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Führen Sie `dotnet run` aus. Wenn Sie die Begrüßung sehen, können Sie loslegen. + +## Schritt 2: HTML in PNG konvertieren – Dokument laden + +Jetzt **konvertieren wir HTML in PNG**. Das erste, was wir benötigen, ist ein `HTMLDocument`‑Objekt, das auf unsere Quelldatei verweist. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Warum das wichtig ist:** `HTMLDocument` analysiert das Markup, wendet CSS an und erstellt ein DOM, das Aspose.HTML später rasterisieren kann. Wenn Sie diesen Schritt überspringen, hat der Renderer nichts, womit er arbeiten kann. + +## Schritt 3: HTML als Bild rendern – Bildrender‑Optionen definieren + +Das Rendering ist der Ort, an dem Sie **Bildgröße HTML festlegen** und Qualitätseinstellungen wie Antialiasing anpassen. Die Klasse `ImageRenderingOptions` bietet Ihnen eine feinkörnige Kontrolle. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Pro‑Tipp:** Wenn Sie `Width` und `Height` weglassen, verwendet Aspose.HTML die intrinsische Größe der Seite, die bei modernen responsiven Designs riesig sein kann. Das Angeben von Abmessungen hält das PNG leichtgewichtig. + +## Schritt 4: HTML als PNG speichern – Konvertierung durchführen + +Wenn Dokument und Optionen bereit sind, rufen wir `ImageConverter` auf. Dieser Schritt **speichert HTML als PNG** an dem von Ihnen gewählten Ort. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +Der `using`‑Block stellt sicher, dass der Konverter alle nativen Ressourcen freigibt, was besonders in langlaufenden Diensten wichtig ist. + +## Schritt 5: Ergebnis überprüfen – Schnell‑Check + +Nachdem die Konvertierung abgeschlossen ist, ist es sinnvoll zu prüfen, ob die Datei existiert und die erwarteten Abmessungen hat. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Öffnen Sie `output.png` in einem beliebigen Bildbetrachter. Sie sollten Ihr ursprüngliches HTML mit 1024 × 768 Pixeln gerendert sehen, mit scharfem Text und glatten Kanten. + +## Vollständiges funktionierendes Beispiel + +Wenn Sie alles zusammenfügen, erhalten Sie ein einzelnes, eigenständiges Programm: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Speichern Sie dies als `Program.cs`, ersetzen Sie `YOUR_DIRECTORY` durch den tatsächlichen Ordnerpfad und führen Sie `dotnet run` aus. Die Konsole führt Sie durch jede Phase und bestätigt die Erstellung der PNG‑Datei. + +## Häufige Fragen & Sonderfälle + +### „Was ist, wenn mein HTML externe CSS‑Dateien oder Bilder verwendet?“ + +Aspose.HTML löst relative URLs automatisch basierend auf dem Verzeichnis der Quelldatei auf. Stellen Sie einfach sicher, dass alle Assets aus demselben Ordner erreichbar sind oder geben Sie eine absolute URL an. + +### „Kann ich ein bestimmtes Element statt der gesamten Seite rendern?“ + +Ja. Laden Sie das Dokument, finden Sie das Element mit `htmlDocument.QuerySelector` und übergeben Sie diesen Knoten an `ImageConverter`. Die API‑Überladung `Convert(IHTMLElement, string, ImageRenderingOptions)` erledigt das. + +### „Wie ändere ich die Hintergrundfarbe des PNG?“ + +Setzen Sie `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (oder jede gewünschte `System.Drawing.Color`) bevor Sie `Convert` aufrufen. + +### „Gibt es eine Möglichkeit, ein JPEG anstelle eines PNG zu erhalten?“ + +Ändern Sie die Dateierweiterung der Ausgabe zu `.jpg` und setzen Sie optional `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. Der Konverter respektiert das gewünschte Format. + +## Leistungstipps + +- **Wiederverwenden Sie den `ImageConverter`**, wenn Sie viele HTML‑Dateien stapelweise verarbeiten; einmaliges Erstellen reduziert den nativen Overhead. +- **Begrenzen Sie die Viewport‑Größe** (`Width`/`Height`) auf die kleinsten tatsächlich benötigten Abmessungen – das reduziert den Speicherverbrauch erheblich. +- **Deaktivieren Sie unnötige Features** wie `UseAntialiasing` für einfache Liniengrafiken; das beschleunigt das Rendering ohne spürbaren Qualitätsverlust. + +## Nächste Schritte + +Jetzt, da Sie wissen, wie man **PNG aus HTML erstellt**, überlegen Sie, den Workflow zu erweitern: + +- **Batch‑Verarbeitung** – iterieren Sie über ein Verzeichnis von HTML‑Dateien und erzeugen Sie für jede ein Thumbnail. +- **Dynamische HTML‑Erzeugung** – kombinieren Sie Razor‑Templates oder StringBuilder mit Aspose.HTML, um Bilder on‑the‑fly zu erzeugen (z. B. Diagramme, Zertifikate oder Rechnungen). +- **Integration mit Web‑APIs** – stellen Sie einen Endpunkt bereit, der rohes HTML akzeptiert und einen PNG‑Stream zurückgibt, ideal für SaaS‑Dienste. + +Jede dieser Ideen baut auf denselben Kernkonzepten auf, die wir behandelt haben: Laden eines `HTMLDocument`, Konfigurieren von `ImageRenderingOptions` und Aufrufen von `ImageConverter`. + +--- + +### TL;DR + +Wir haben eine einfache, produktionsreife Methode gezeigt, um **PNG aus HTML zu erstellen** mit Aspose.HTML für .NET. Das Tutorial führt Sie durch die Installation des Pakets, das Laden von HTML, das Festlegen von Größe und Qualität, die Konvertierung zu PNG und die Überprüfung des Ergebnisses. Mit dem vollständigen Quellcode können Sie das Muster an Batch‑Jobs, Web‑Services oder jede Situation anpassen, in der Sie **HTML in PNG konvertieren**, **HTML als Bild rendern**, **Bildgröße HTML festlegen** und **HTML als PNG speichern** müssen. Viel Spaß beim Coden! + +--- + +![Diagramm, das den Ablauf von HTML‑Datei → Aspose.HTML → PNG‑Ausgabe (PNG aus HTML erstellen) zeigt](placeholder-image.png "Ablaufdiagramm: PNG aus HTML erstellen") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/greek/net/generate-jpg-and-png-images/_index.md b/html/greek/net/generate-jpg-and-png-images/_index.md index b33926382..a94234864 100644 --- a/html/greek/net/generate-jpg-and-png-images/_index.md +++ b/html/greek/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ url: /el/net/generate-jpg-and-png-images/ Μάθετε πώς να δημιουργείτε δυναμικές ιστοσελίδες χρησιμοποιώντας το Aspose.HTML για .NET. Αυτό το σεμινάριο βήμα προς βήμα καλύπτει τις προϋποθέσεις, τους χώρους ονομάτων και την απόδοση HTML σε εικόνες. ### [Δημιουργήστε εικόνες PNG από ImageDevice σε .NET με Aspose.HTML](./generate-png-images-by-imagedevice/) Μάθετε να χρησιμοποιείτε το Aspose.HTML για .NET για χειρισμό εγγράφων HTML, μετατροπή HTML σε εικόνες και πολλά άλλα. Βήμα προς βήμα μάθημα με συχνές ερωτήσεις. +### [Δημιουργία PNG από HTML – Πλήρης Οδηγός C# με Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Μάθετε πώς να μετατρέπετε HTML σε PNG με πλήρη οδηγό C# χρησιμοποιώντας το Aspose.HTML. ## Σύναψη @@ -52,4 +54,4 @@ url: /el/net/generate-jpg-and-png-images/ {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/greek/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/greek/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..81449203d --- /dev/null +++ b/html/greek/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,257 @@ +--- +category: general +date: 2026-01-10 +description: Δημιουργήστε PNG από HTML γρήγορα χρησιμοποιώντας το Aspose.HTML. Μάθετε + πώς να μετατρέπετε HTML σε PNG, να αποδίδετε HTML ως εικόνα, να ορίζετε το μέγεθος + της εικόνας HTML και να αποθηκεύετε HTML ως PNG σε ένα ενιαίο σεμινάριο. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: el +og_description: Δημιουργήστε PNG από HTML με το Aspose.HTML. Αυτός ο οδηγός δείχνει + πώς να μετατρέψετε HTML σε PNG, να αποδώσετε το HTML ως εικόνα, να ορίσετε το μέγεθος + της εικόνας HTML και να αποθηκεύσετε το HTML ως PNG. +og_title: Δημιουργία PNG από HTML – Πλήρες σεμινάριο C# +tags: +- C# +- Aspose.HTML +- Image Rendering +title: Δημιουργία PNG από HTML – Πλήρης Οδηγός C# με το Aspose.HTML +url: /el/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Δημιουργία PNG από HTML – Πλήρης Εκπαίδευση C# + +Έχετε ποτέ χρειαστεί να **create PNG from HTML** αλλά δεν ήσασταν σίγουροι ποια βιβλιοθήκη θα σας δώσει αποτελέσματα pixel‑perfect; Δεν είστε μόνοι. Πολλοί προγραμματιστές συναντούν πρόβλημα όταν προσπαθούν να μετατρέψουν μια δυναμική ιστοσελίδα σε μια στατική εικόνα για αναφορές, μικρογραφίες ή προεπισκοπήσεις email. + +Σε αυτόν τον οδηγό θα περάσουμε βήμα‑βήμα μια πρακτική, ολοκληρωμένη λύση που **converts HTML to PNG**, **renders HTML as image**, σας επιτρέπει να **set image size HTML**, και τελικά **saves HTML as PNG**—όλα με το Aspose.HTML for .NET. Στο τέλος θα έχετε μια έτοιμη για εκτέλεση εφαρμογή console που δημιουργεί ένα καθαρό αρχείο PNG ακριβώς στο μέγεθος που καθορίζετε. + +## Τι Θα Χρειαστείτε + +- **.NET 6.0** ή νεότερο (το API λειτουργεί και στο .NET Framework, αλλά το .NET 6 είναι η ιδανική επιλογή). +- **Aspose.HTML for .NET** – μπορείτε να το αποκτήσετε από το NuGet (`Install-Package Aspose.HTML`). +- Ένα απλό αρχείο **input.html** που θέλετε να αποδώσετε. Οτιδήποτε από ένα στατικό πρότυπο μέχρι μια πλήρως μορφοποιημένη σελίδα λειτουργεί. +- Visual Studio, Rider ή οποιονδήποτε επεξεργαστή προτιμάτε. + +Χωρίς επιπλέον εξαρτήσεις, χωρίς headless browsers, μόνο μια καθαρή βιβλιοθήκη .NET. + +## Βήμα 1: Create PNG from HTML – Ρύθμιση Έργου + +Πρώτα, δημιουργήστε ένα νέο έργο console και προσθέστε το πακέτο Aspose.HTML. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Μόλις επαναφερθεί το πακέτο, ανοίξτε το `Program.cs`. Θα αντικαταστήσουμε το προεπιλεγμένο περιεχόμενο με το πλήρες παράδειγμα αργότερα, αλλά προς το παρόν επιβεβαιώστε ότι το έργο κατασκευάζεται: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Εκτελέστε `dotnet run`. Αν δείτε το μήνυμα καλωσορίσματος, είστε έτοιμοι. + +## Βήμα 2: Convert HTML to PNG – Φόρτωση του Εγγράφου + +Τώρα πραγματικά **convert HTML to PNG**. Το πρώτο που χρειάζεται είναι ένα αντικείμενο `HTMLDocument` που δείχνει στο αρχείο πηγής μας. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Γιατί είναι σημαντικό:** `HTMLDocument` αναλύει το markup, εφαρμόζει CSS και δημιουργεί ένα DOM που το Aspose.HTML μπορεί αργότερα να rasterize. Η παράλειψη αυτού του βήματος σημαίνει ότι ο renderer δεν έχει τίποτα για να δουλέψει. + +## Βήμα 3: Render HTML as Image – Ορισμός Επιλογών Απόδοσης Εικόνας + +Η απόδοση είναι το σημείο όπου **set image size HTML** και ρυθμίζετε τις ρυθμίσεις ποιότητας όπως antialiasing. Η κλάση `ImageRenderingOptions` σας δίνει λεπτομερή έλεγχο. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Συμβουλή:** Αν παραλείψετε τα `Width` και `Height`, το Aspose.HTML θα χρησιμοποιήσει το ενδογενές μέγεθος της σελίδας, το οποίο μπορεί να είναι τεράστιο για σύγχρονες responsive σχεδιάσεις. Ο καθορισμός διαστάσεων διατηρεί το PNG ελαφρύ. + +## Βήμα 4: Save HTML as PNG – Εκτέλεση της Μετατροπής + +Με το έγγραφο και τις επιλογές έτοιμες, καλούμε το `ImageConverter`. Αυτό το βήμα **saves HTML as PNG** στην τοποθεσία που επιλέγετε. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +Το μπλοκ `using` εξασφαλίζει ότι ο converter απελευθερώνει τυχόν εγγενείς πόρους, κάτι που είναι ιδιαίτερα σημαντικό σε υπηρεσίες μακράς διάρκειας. + +## Βήμα 5: Verify the Result – Γρήγορος Έλεγχος + +Μετά το τέλος της μετατροπής, είναι καλή ιδέα να επιβεβαιώσετε ότι το αρχείο υπάρχει και έχει τις αναμενόμενες διαστάσεις. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Ανοίξτε το `output.png` σε οποιονδήποτε προβολέα εικόνας. Θα πρέπει να δείτε το αρχικό σας HTML αποδομένο σε 1024 × 768 pixels, με καθαρό κείμενο και ομαλές άκρες. + +## Πλήρες Παράδειγμα Λειτουργίας + +Συνδυάζοντας όλα μαζί, παίρνετε ένα ενιαίο, αυτόνομο πρόγραμμα: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Αποθηκεύστε το ως `Program.cs`, αντικαταστήστε το `YOUR_DIRECTORY` με την πραγματική διαδρομή φακέλου, και εκτελέστε `dotnet run`. Η κονσόλα θα σας καθοδηγήσει σε κάθε στάδιο και θα επιβεβαιώσει τη δημιουργία του αρχείου PNG. + +## Συχνές Ερωτήσεις & Ακραίες Περιπτώσεις + +### “Τι γίνεται αν το HTML μου χρησιμοποιεί εξωτερικό CSS ή εικόνες;” + +Το Aspose.HTML αυτόματα επιλύει σχετικές URLs βάσει του καταλόγου του αρχείου πηγής. Απλώς βεβαιωθείτε ότι όλα τα assets είναι προσβάσιμα από τον ίδιο φάκελο ή παρέχετε απόλυτο URL. + +### “Μπορώ να αποδώσω ένα συγκεκριμένο στοιχείο αντί ολόκληρης της σελίδας;” + +Ναι. Φορτώστε το έγγραφο, εντοπίστε το στοιχείο με `htmlDocument.QuerySelector`, και περάστε αυτόν τον κόμβο στο `ImageConverter`. Η υπερφόρτωση API `Convert(IHTMLElement, string, ImageRenderingOptions)` κάνει τη δουλειά. + +### “Πώς αλλάζω το χρώμα φόντου του PNG;” + +Ορίστε `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (ή οποιοδήποτε `System.Drawing.Color` θέλετε) πριν καλέσετε το `Convert`. + +### “Υπάρχει τρόπος να λάβω JPEG αντί PNG;” + +Αλλάξτε την επέκταση του αρχείου εξόδου σε `.jpg` και προαιρετικά ορίστε `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. Ο converter θα σεβαστεί τη ζητούμενη μορφή. + +## Συμβουλές Απόδοσης + +- **Reuse the `ImageConverter`** αν επεξεργάζεστε πολλά αρχεία HTML σε batch· η δημιουργία του μία φορά μειώνει το εγγενές overhead. +- **Limit the viewport size** (`Width`/`Height`) στις μικρότερες διαστάσεις που πραγματικά χρειάζεστε—αυτό μειώνει δραστικά τη χρήση μνήμης. +- **Turn off unnecessary features** όπως `UseAntialiasing` για απλό γραφικό περιεχόμενο· επιταχύνει την απόδοση χωρίς αισθητή απώλεια ποιότητας. + +## Επόμενα Βήματα + +Τώρα που ξέρετε πώς να **create PNG from HTML**, σκεφτείτε να επεκτείνετε τη ροή εργασίας: + +- **Batch processing** – επαναλάβετε πάνω σε έναν φάκελο με αρχεία HTML και δημιουργήστε μικρογραφίες για κάθε ένα. +- **Dynamic HTML generation** – συνδυάστε Razor templates ή StringBuilder με Aspose.HTML για παραγωγή εικόνων on‑the‑fly (π.χ. γραφήματα, πιστοποιητικά ή τιμολόγια). +- **Integration with web APIs** – εκθέστε ένα endpoint που δέχεται raw HTML και επιστρέφει ένα ρεύμα PNG, ιδανικό για υπηρεσίες SaaS. + +Κάθε μία από αυτές τις ιδέες βασίζεται στις ίδιες βασικές έννοιες που καλύψαμε: φόρτωση ενός `HTMLDocument`, ρύθμιση `ImageRenderingOptions`, και κλήση του `ImageConverter`. + +### TL;DR + +Σας παρουσιάσαμε έναν απλό, έτοιμο για παραγωγή τρόπο να **create PNG from HTML** χρησιμοποιώντας το Aspose.HTML for .NET. Ο οδηγός σας οδηγεί στη εγκατάσταση του πακέτου, τη φόρτωση του HTML, τον καθορισμό μεγέθους και ποιότητας, τη μετατροπή σε PNG, και την επαλήθευση του αποτελέσματος. Με τον πλήρη κώδικα στη διάθεσή σας, μπορείτε να προσαρμόσετε το μοτίβο σε batch εργασίες, web services, ή οποιοδήποτε σενάριο όπου χρειάζεται να **convert HTML to PNG**, **render HTML as image**, **set image size HTML**, και **save HTML as PNG**. Καλή προγραμματιστική! + +![Διάγραμμα που δείχνει τη ροή από αρχείο HTML → Aspose.HTML → έξοδο PNG (create png from html)](placeholder-image.png "Διάγραμμα ροής δημιουργίας PNG από HTML") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/hindi/net/generate-jpg-and-png-images/_index.md b/html/hindi/net/generate-jpg-and-png-images/_index.md index fd2cc0408..c2edbc4c0 100644 --- a/html/hindi/net/generate-jpg-and-png-images/_index.md +++ b/html/hindi/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Aspose.HTML for .NET को अपने .NET प्रोजेक्ट मे जानें कि .NET के लिए Aspose.HTML का उपयोग करके गतिशील वेब पेज कैसे बनाएं। यह चरण-दर-चरण ट्यूटोरियल पूर्वापेक्षाएँ, नामस्थान और HTML को छवियों में प्रस्तुत करने को कवर करता है। ### [Aspose.HTML के साथ .NET में ImageDevice द्वारा PNG छवियाँ उत्पन्न करें](./generate-png-images-by-imagedevice/) HTML दस्तावेज़ों में हेरफेर करने, HTML को छवियों में बदलने, और बहुत कुछ करने के लिए .NET के लिए Aspose.HTML का उपयोग करना सीखें। FAQ के साथ चरण-दर-चरण ट्यूटोरियल। +### [HTML से PNG बनाएं – Aspose.HTML के साथ पूर्ण C# गाइड](./create-png-from-html-full-c-guide-with-aspose-html/) +Aspose.HTML का उपयोग करके HTML को PNG में बदलने के लिए पूर्ण C# चरण-दर-चरण गाइड। आवश्यक सेटअप और कोड उदाहरण शामिल हैं। ## निष्कर्ष @@ -52,4 +54,4 @@ HTML दस्तावेज़ों में हेरफेर करने {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/hindi/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/hindi/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..66837c018 --- /dev/null +++ b/html/hindi/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,259 @@ +--- +category: general +date: 2026-01-10 +description: Aspose.HTML का उपयोग करके HTML से जल्दी PNG बनाएं। जानें कि HTML को PNG + में कैसे बदलें, HTML को छवि के रूप में रेंडर करें, छवि का आकार सेट करें, और एक ही + ट्यूटोरियल में HTML को PNG के रूप में सहेजें। +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: hi +og_description: Aspose.HTML के साथ HTML से PNG बनाएं। यह गाइड दिखाता है कि HTML को + PNG में कैसे बदलें, HTML को इमेज के रूप में रेंडर करें, इमेज का आकार सेट करें, और + HTML को PNG के रूप में सहेजें। +og_title: HTML से PNG बनाएं – पूर्ण C# ट्यूटोरियल +tags: +- C# +- Aspose.HTML +- Image Rendering +title: HTML से PNG बनाएं – Aspose.HTML के साथ पूर्ण C# गाइड +url: /hi/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Create PNG from HTML – Complete C# Tutorial + +क्या आपको कभी **HTML से PNG बनाने** की ज़रूरत पड़ी है लेकिन यह नहीं पता था कि कौन‑सी लाइब्रेरी पिक्सेल‑परफेक्ट रिज़ल्ट देगी? आप अकेले नहीं हैं। कई डेवलपर्स को एक डायनामिक वेब पेज को रिपोर्ट, थंबनेल या ई‑मेल प्रीव्यू के लिए स्थिर इमेज में बदलते समय दिक्कत आती है। + +इस गाइड में हम एक प्रैक्टिकल, एंड‑टू‑एंड समाधान पर चलते हैं जो **HTML को PNG में बदलता है**, **HTML को इमेज के रूप में रेंडर करता है**, आपको **HTML की इमेज साइज सेट करने** देता है, और अंत में **HTML को PNG के रूप में सेव करता है**—सब कुछ Aspose.HTML for .NET के साथ। अंत तक आपके पास एक तैयार‑चलाने‑योग्य कंसोल ऐप होगा जो बिल्कुल वही PNG फ़ाइल बनाता है जिसका आकार आप निर्दिष्ट करते हैं। + +## What You’ll Need + +कोड में डुबने से पहले सुनिश्चित करें कि आपके पास ये हैं: + +- **.NET 6.0** या बाद का संस्करण (API .NET Framework पर भी काम करता है, लेकिन .NET 6 सबसे उपयुक्त है)। +- **Aspose.HTML for .NET** – इसे NuGet से प्राप्त करें (`Install-Package Aspose.HTML`)। +- एक साधारण **input.html** फ़ाइल जिसे आप रेंडर करना चाहते हैं। कोई भी स्थिर टेम्पलेट या पूरी‑स्टाइल्ड पेज काम करेगा। +- Visual Studio, Rider, या कोई भी एडिटर जो आपको पसंद हो। + +कोई अतिरिक्त डिपेंडेंसी नहीं, कोई हेडलेस ब्राउज़र नहीं, सिर्फ़ एक साफ़ .NET लाइब्रेरी। + +## Step 1: Create PNG from HTML – Project Setup + +सबसे पहले, एक नया कंसोल प्रोजेक्ट बनाएं और Aspose.HTML पैकेज को जोड़ें। + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +पैकेज रिस्टोर हो जाने के बाद, `Program.cs` खोलें। हम बाद में डिफ़ॉल्ट कंटेंट को पूरे उदाहरण से बदलेंगे, लेकिन अभी के लिए सिर्फ़ यह पुष्टि करें कि प्रोजेक्ट बिल्ड हो रहा है: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +`dotnet run` चलाएँ। अगर आपको ग्रीटिंग दिखे, तो आप तैयार हैं। + +## Step 2: Convert HTML to PNG – Load the Document + +अब हम वास्तव में **HTML को PNG में बदलते** हैं। सबसे पहले हमें एक `HTMLDocument` ऑब्जेक्ट चाहिए जो हमारे स्रोत फ़ाइल की ओर इशारा करता हो। + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Why this matters:** `HTMLDocument` मार्कअप को पार्स करता है, CSS लागू करता है, और एक DOM बनाता है जिसे Aspose.HTML बाद में रास्टराइज़ कर सकता है। इस स्टेप को छोड़ने पर रेंडरर के पास काम करने के लिए कुछ नहीं रहेगा। + +## Step 3: Render HTML as Image – Define Image Rendering Options + +रेंडरिंग वह जगह है जहाँ आप **HTML की इमेज साइज सेट** करते हैं और एंटी‑एलियासिंग जैसी क्वालिटी सेटिंग्स को ट्यून करते हैं। `ImageRenderingOptions` क्लास आपको बारीकी से कंट्रोल देती है। + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Pro tip:** अगर आप `Width` और `Height` को छोड़ देते हैं, तो Aspose.HTML पेज के इन्ट्रिंसिक साइज को उपयोग करेगा, जो आधुनिक रिस्पॉन्सिव डिज़ाइनों के लिए बहुत बड़ा हो सकता है। डाइमेंशन निर्दिष्ट करने से PNG हल्का रहता है। + +## Step 4: Save HTML as PNG – Perform the Conversion + +डॉक्यूमेंट और ऑप्शन्स तैयार होने के बाद, हम `ImageConverter` को कॉल करते हैं। यह स्टेप **HTML को PNG के रूप में सेव** करता है उस लोकेशन पर जिसे आप चुनते हैं। + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +`using` ब्लॉक यह सुनिश्चित करता है कि कन्वर्टर कोई भी नेटिव रिसोर्स रिलीज़ कर दे, जो लम्बे‑चलने वाले सर्विसेज़ में खासा महत्वपूर्ण है। + +## Step 5: Verify the Result – Quick Check + +कन्वर्ज़न समाप्त होने के बाद, यह अच्छा रहेगा कि आप फ़ाइल की मौजूदगी और अपेक्षित डाइमेंशन की जाँच कर लें। + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +`output.png` को किसी भी इमेज व्यूअर में खोलें। आपको आपका मूल HTML 1024 × 768 पिक्सेल पर रेंडर हुआ दिखना चाहिए, साफ़ टेक्स्ट और स्मूद एजेस के साथ। + +## Full Working Example + +सब कुछ मिलाकर आपको एक सिंगल, सेल्फ‑कंटेन्ड प्रोग्राम मिलता है: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +इसे `Program.cs` के रूप में सेव करें, `YOUR_DIRECTORY` को वास्तविक फ़ोल्डर पाथ से बदलें, और `dotnet run` चलाएँ। कंसोल हर स्टेज को गाइड करेगा और PNG फ़ाइल के निर्माण की पुष्टि करेगा। + +## Common Questions & Edge Cases + +### “What if my HTML uses external CSS or images?” +Aspose.HTML स्वचालित रूप से रिलेटिव URL को स्रोत फ़ाइल की डायरेक्टरी के आधार पर रिज़ॉल्व कर लेता है। बस यह सुनिश्चित करें कि सभी एसेट्स उसी फ़ोल्डर से एक्सेसिबल हों या एक एब्सोल्यूट URL प्रदान करें। + +### “Can I render a specific element instead of the whole page?” +हाँ। डॉक्यूमेंट लोड करें, `htmlDocument.QuerySelector` से एलेमेंट खोजें, और उस नोड को `ImageConverter` को पास करें। API ओवरलोड `Convert(IHTMLElement, string, ImageRenderingOptions)` यही काम करता है। + +### “How do I change the background color of the PNG?” +`renderingOptions.BackgroundColor = System.Drawing.Color.White;` (या कोई भी `System.Drawing.Color` जो आप चाहें) को `Convert` कॉल करने से पहले सेट करें। + +### “Is there a way to get a JPEG instead of PNG?” +आउटपुट फ़ाइल एक्सटेंशन को `.jpg` में बदलें और वैकल्पिक रूप से `renderingOptions.ImageFormat = ImageFormat.Jpeg;` सेट करें। कन्वर्टर अनुरोधित फ़ॉर्मेट को सम्मान देगा। + +## Performance Tips + +- **Reuse the `ImageConverter`** यदि आप बैच में कई HTML फ़ाइलें प्रोसेस कर रहे हैं; एक बार बनाकर रखने से नेटिव ओवरहेड कम होता है। +- **Limit the viewport size** (`Width`/`Height`) को न्यूनतम आवश्यक डाइमेंशन तक रखें—यह मेमोरी उपयोग को काफी घटाता है। +- **Turn off unnecessary features** जैसे `UseAntialiasing` सरल लाइन आर्ट के लिए; यह रेंडरिंग को तेज़ करता है बिना स्पष्ट क्वालिटी लॉस के। + +## Next Steps + +अब जब आप **HTML से PNG बनाने** के बारे में जानते हैं, तो वर्कफ़्लो को आगे बढ़ाएँ: + +- **Batch processing** – एक डायरेक्टरी में सभी HTML फ़ाइलों पर लूप चलाएँ और प्रत्येक के लिए थंबनेल जनरेट करें। +- **Dynamic HTML generation** – Razor टेम्प्लेट या `StringBuilder` को Aspose.HTML के साथ मिलाकर ऑन‑द‑फ़्लाई इमेज बनाएं (जैसे चार्ट, सर्टिफ़िकेट, या इनवॉइस)। +- **Integration with web APIs** – एक एन्डपॉइंट एक्सपोज़ करें जो रॉ HTML ले और PNG स्ट्रीम रिटर्न करे, SaaS सर्विसेज़ के लिए परफ़ेक्ट। + +इन सभी आइडियाज़ का आधार वही कोर कॉन्सेप्ट्स हैं जो हमने कवर किए: `HTMLDocument` लोड करना, `ImageRenderingOptions` कॉन्फ़िगर करना, और `ImageConverter` को कॉल करना। + +--- + +### TL;DR + +हमने Aspose.HTML for .NET का उपयोग करके **HTML से PNG बनाने** का एक सीधा, प्रोडक्शन‑रेडी तरीका दिखाया। ट्यूटोरियल में पैकेज इंस्टॉल करना, HTML लोड करना, साइज और क्वालिटी सेट करना, PNG में कन्वर्ट करना, और रिज़ल्ट वेरिफ़ाई करना शामिल है। पूरी सोर्स कोड के साथ, आप इस पैटर्न को बैच जॉब्स, वेब सर्विसेज़, या किसी भी सीनारियो में एडेप्ट कर सकते हैं जहाँ आपको **HTML को PNG में बदलना**, **HTML को इमेज के रूप में रेंडर करना**, **HTML की इमेज साइज सेट करना**, और **HTML को PNG के रूप में सेव करना** है। Happy coding! + +--- + +![Diagram showing the flow from HTML file → Aspose.HTML → PNG output (create png from html)](placeholder-image.png "Create PNG from HTML flow diagram") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/hongkong/net/generate-jpg-and-png-images/_index.md b/html/hongkong/net/generate-jpg-and-png-images/_index.md index 25aae2c13..1b6b56274 100644 --- a/html/hongkong/net/generate-jpg-and-png-images/_index.md +++ b/html/hongkong/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Aspose.HTML for .NET 提供了一種將 HTML 轉換為映像的簡單方法。 了解如何使用 Aspose.HTML for .NET 建立動態網頁。本逐步教學涵蓋先決條件、命名空間以及將 HTML 渲染為圖片。 ### [使用 Aspose.HTML 在 .NET 中透過 ImageDevice 產生 PNG 映像](./generate-png-images-by-imagedevice/) 學習使用 Aspose.HTML for .NET 來操作 HTML 文件、將 HTML 轉換為圖片等。包含常見問題的逐步教學。 +### [使用 Aspose.HTML 完整 C# 指南：從 HTML 產生 PNG](./create-png-from-html-full-c-guide-with-aspose-html/) +深入了解如何使用 Aspose.HTML for .NET 以 C# 完整步驟將 HTML 轉換為高品質 PNG 圖像。 ## 結論 @@ -52,4 +54,4 @@ Aspose.HTML for .NET 提供了一種將 HTML 轉換為映像的簡單方法。 {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/hongkong/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/hongkong/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..5ca969e72 --- /dev/null +++ b/html/hongkong/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,255 @@ +--- +category: general +date: 2026-01-10 +description: 使用 Aspose.HTML 快速將 HTML 轉換為 PNG。了解如何將 HTML 轉換為 PNG、將 HTML 渲染為圖片、設定 HTML + 圖片尺寸，以及在單一教學中將 HTML 儲存為 PNG。 +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: zh-hant +og_description: 使用 Aspose.HTML 從 HTML 建立 PNG。本指南說明如何將 HTML 轉換為 PNG、將 HTML 渲染為圖像、設定圖像尺寸，以及將 + HTML 儲存為 PNG。 +og_title: 從 HTML 產生 PNG – 完整 C# 教學 +tags: +- C# +- Aspose.HTML +- Image Rendering +title: 從 HTML 產生 PNG – 完整 C# 指南（使用 Aspose.HTML） +url: /zh-hant/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# 從 HTML 建立 PNG – 完整 C# 教學 + +曾經需要 **create PNG from HTML** 但不確定哪個函式庫能提供像素完美的結果嗎？你並不孤單。許多開發人員在嘗試將動態網頁轉換為報告、縮圖或電郵預覽的靜態影像時，常會卡住。 + +在本指南中，我們將逐步說明一個實用的端對端解決方案，該方案使用 Aspose.HTML for .NET **converts HTML to PNG**、**renders HTML as image**、讓你 **set image size HTML**，最後 **saves HTML as PNG**——完成後，你將擁有一個可直接執行的主控台應用程式，輸出符合指定尺寸的清晰 PNG 檔案。 + +## 需要的環境 + +- **.NET 6.0** 或更新版本（API 亦可在 .NET Framework 上運作，但 .NET 6 是最佳選擇）。 +- **Aspose.HTML for .NET** – 可從 NuGet 取得（`Install-Package Aspose.HTML`）。 +- 一個想要渲染的簡易 **input.html** 檔案。無論是靜態範本或完整樣式的頁面皆可。 +- Visual Studio、Rider，或任何你慣用的編輯器。 + +不需要額外的相依性、無需無頭瀏覽器，只要一個乾淨的 .NET 函式庫。 + +## 步驟 1：Create PNG from HTML – 專案設定 + +首先，建立一個新的主控台專案，並加入 Aspose.HTML 套件。 + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +套件還原完成後，開啟 `Program.cs`。稍後我們會用完整範例取代預設內容，但現在先確認專案能成功編譯： + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +執行 `dotnet run`。若看到問候訊息，即表示設定正確，可繼續。 + +## 步驟 2：Convert HTML to PNG – 載入文件 + +現在我們真正 **convert HTML to PNG**。首先需要一個指向來源檔案的 `HTMLDocument` 物件。 + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **為何重要：** `HTMLDocument` 會解析標記、套用 CSS，並建立 Aspose.HTML 後續可光柵化的 DOM。若省略此步驟，渲染器將無資料可處理。 + +## 步驟 3：Render HTML as Image – 定義影像渲染選項 + +渲染階段是你 **set image size HTML** 並調整品質設定（如抗鋸齒）的地方。`ImageRenderingOptions` 類別提供精細的控制。 + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **專業提示：** 若省略 `Width` 與 `Height`，Aspose.HTML 會使用頁面的本身尺寸，對於現代響應式設計可能非常龐大。指定尺寸可讓 PNG 輕量化。 + +## 步驟 4：Save HTML as PNG – 執行轉換 + +文件與選項準備好後，我們呼叫 `ImageConverter`。此步驟 **saves HTML as PNG** 到你指定的位置。 + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +`using` 區塊可確保轉換器釋放任何原生資源，對於長時間執行的服務尤為重要。 + +## 步驟 5：Verify the Result – 快速檢查 + +轉換完成後，最好確認檔案是否存在且尺寸符合預期。 + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +在任何影像檢視器中開啟 `output.png`。你應該會看到原始 HTML 以 1024 × 768 像素渲染，文字清晰、邊緣平滑。 + +## 完整範例 + +將所有步驟整合起來，即可得到一個單一、獨立的程式： + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +將其儲存為 `Program.cs`，將 `YOUR_DIRECTORY` 替換為實際資料夾路徑，然後執行 `dotnet run`。主控台會逐步說明每個階段，並確認 PNG 檔案已建立。 + +## 常見問題與邊緣情況 + +### 「如果我的 HTML 使用外部 CSS 或圖片呢？」 + +Aspose.HTML 會自動根據來源檔案的目錄解析相對 URL。只要確保所有資源可從同一資料夾取得，或提供絕對 URL 即可。 + +### 「我可以只渲染特定元素而非整頁嗎？」 + +可以。載入文件後，使用 `htmlDocument.QuerySelector` 找到目標元素，並將該節點傳給 `ImageConverter`。API 重載 `Convert(IHTMLElement, string, ImageRenderingOptions)` 即可完成。 + +### 「如何變更 PNG 的背景顏色？」 + +在呼叫 `Convert` 前，設定 `renderingOptions.BackgroundColor = System.Drawing.Color.White;`（或任意 `System.Drawing.Color`）即可。 + +### 「有沒有辦法取得 JPEG 而非 PNG？」 + +將輸出檔案副檔名改為 `.jpg`，並可選擇設定 `renderingOptions.ImageFormat = ImageFormat.Jpeg;`。轉換器會遵循所指定的格式。 + +## 效能建議 + +- **Reuse the `ImageConverter`** 若在批次處理大量 HTML 檔案，請重複使用 `ImageConverter`；只建立一次可減少原生開銷。 +- **Limit the viewport size** (`Width`/`Height`) 為實際需要的最小尺寸——可大幅降低記憶體使用量。 +- **Turn off unnecessary features** 如 `UseAntialiasing`（針對簡單線條圖），可加速渲染且不會明顯影響品質。 + +## 後續步驟 + +既然你已了解如何 **create PNG from HTML**，可以考慮擴充工作流程： + +- **Batch processing** – 迭代目錄中的 HTML 檔案，為每個檔案產生縮圖。 +- **Dynamic HTML generation** – 結合 Razor 範本或 StringBuilder 與 Aspose.HTML，即時產生影像（如圖表、證書或發票）。 +- **Integration with web APIs** – 提供接受原始 HTML 並回傳 PNG 串流的端點，適合 SaaS 服務。 + +上述想法皆基於我們先前討論的核心概念：載入 `HTMLDocument`、設定 `ImageRenderingOptions`，以及呼叫 `ImageConverter`。 + +### TL;DR + +我們示範了一個直接且可投入生產的方式，使用 Aspose.HTML for .NET **create PNG from HTML**。本教學帶領你完成套件安裝、載入 HTML、設定尺寸與品質、轉換為 PNG，並驗證結果。擁有完整原始碼後，你可以將此模式套用於批次工作、Web 服務，或任何需要 **convert HTML to PNG**、**render HTML as image**、**set image size HTML**、**save HTML as PNG** 的情境。祝開發順利！ + +![顯示 HTML 檔案 → Aspose.HTML → PNG 輸出流程的圖示（create png from html）](placeholder-image.png "Create PNG from HTML 流程圖") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/hungarian/net/generate-jpg-and-png-images/_index.md b/html/hungarian/net/generate-jpg-and-png-images/_index.md index 1b75e9ec3..24e7b8881 100644 --- a/html/hungarian/net/generate-jpg-and-png-images/_index.md +++ b/html/hungarian/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Az Aspose.HTML for .NET integrálása a .NET-projektekbe problémamentes. A kön Ismerje meg, hogyan hozhat létre dinamikus weboldalakat az Aspose.HTML for .NET használatával. Ez a lépésenkénti oktatóanyag az előfeltételeket, a névtereket és a HTML képekben való megjelenítését ismerteti. ### [PNG-képek létrehozása ImageDevice segítségével .NET-ben az Aspose.HTML-lel](./generate-png-images-by-imagedevice/) Tanulja meg az Aspose.HTML for .NET használatát HTML-dokumentumok kezeléséhez, HTML-kódok képpé konvertálásához stb. Lépésről lépésre bemutató GYIK. +### [PNG létrehozása HTML-ből – Teljes C# útmutató az Aspose.HTML használatával](./create-png-from-html-full-c-guide-with-aspose-html/) +Ismerje meg, hogyan konvertálhat HTML-t PNG képpé C#-ban az Aspose.HTML segítségével, részletes lépésekkel és beállításokkal. ## Következtetés @@ -52,4 +54,4 @@ Szóval minek várni? Kezdje el felfedezni a HTML-kép konvertálás világát a {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/hungarian/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/hungarian/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..da74c7b3b --- /dev/null +++ b/html/hungarian/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,259 @@ +--- +category: general +date: 2026-01-10 +description: Készíts PNG-t HTML-ből gyorsan az Aspose.HTML segítségével. Tanulja meg, + hogyan konvertálja a HTML-t PNG-re, hogyan jelenítse meg a HTML-t képként, hogyan + állítsa be a kép méretét HTML-ben, és hogyan mentse a HTML-t PNG-ként egyetlen útmutatóban. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: hu +og_description: Készítsen PNG-t HTML-ből az Aspose.HTML segítségével. Ez az útmutató + bemutatja, hogyan konvertálhatja a HTML-t PNG-re, hogyan renderelhet HTML-t képként, + hogyan állíthatja be a kép méretét HTML-ben, és hogyan mentheti a HTML-t PNG formátumban. +og_title: PNG létrehozása HTML‑ből – Teljes C# oktatóanyag +tags: +- C# +- Aspose.HTML +- Image Rendering +title: PNG létrehozása HTML‑ből – Teljes C# útmutató az Aspose.HTML‑hez +url: /hu/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# PNG létrehozása HTML‑ből – Teljes C# oktatóanyag + +Valaha is szükséged volt **PNG létrehozása HTML‑ből**, de nem tudtad, melyik könyvtár adja a pixel‑pontos eredményt? Nem vagy egyedül. Sok fejlesztő akad el, amikor egy dinamikus weboldalt statikus képpé akar alakítani jelentésekhez, bélyegképekhez vagy e‑mail előnézetekhez. + +Ebben az útmutatóban egy gyakorlati, vég‑től‑végig megoldást mutatunk be, amely **HTML‑t PNG‑vé konvertál**, **HTML‑t képként renderel**, lehetővé teszi a **kép méretének beállítását HTML‑ben**, és végül **HTML‑t PNG‑ként ment** – mindezt az Aspose.HTML for .NET segítségével. A végére egy kész konzolalkalmazásod lesz, amely egy éles PNG‑fájlt hoz létre a megadott mérettel. + +## Amire szükséged lesz + +Mielőtt belevágnánk a kódba, győződj meg róla, hogy a következők rendelkezésedre állnak: + +- **.NET 6.0** vagy újabb (az API .NET Framework‑ön is működik, de a .NET 6 a legoptimálisabb). +- **Aspose.HTML for .NET** – letöltheted a NuGet‑ről (`Install-Package Aspose.HTML`). +- Egy egyszerű **input.html** fájl, amelyet renderelni szeretnél. Bármilyen statikus sablon vagy teljesen stílusos oldal megfelel. +- Visual Studio, Rider vagy bármelyik kedvenc szerkesztőd. + +Nincsenek extra függőségek, nincs fej nélküli böngésző, csak egy tiszta .NET könyvtár. + +## 1. lépés: PNG létrehozása HTML‑ből – Projekt beállítása + +Először hozz létre egy új konzolprojektet, és add hozzá az Aspose.HTML csomagot. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Miután a csomag vissza lett állítva, nyisd meg a `Program.cs`‑t. Később lecseréljük az alapértelmezett tartalmat a teljes példára, de most csak ellenőrizd, hogy a projekt lefordul: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Futtasd a `dotnet run` parancsot. Ha a köszöntő üzenetet látod, minden rendben van. + +## 2. lépés: HTML‑t PNG‑vé konvertálás – Dokumentum betöltése + +Most ténylegesen **HTML‑t PNG‑vé konvertálunk**. Az első dolog, amire szükségünk van, egy `HTMLDocument` objektum, amely a forrásfájlra mutat. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Miért fontos:** A `HTMLDocument` beolvassa a markup‑ot, alkalmazza a CSS‑t, és felépíti a DOM‑ot, amelyet az Aspose.HTML később rasterizál. Ennek kihagyása azt jelenti, hogy a renderelőnek nincs mit feldolgoznia. + +## 3. lépés: HTML renderelése képként – Kép renderelési beállítások meghatározása + +A renderelés során **kép méretének beállítása HTML‑ben** és a minőségi beállítások, például az antialiasing finomhangolása történik. Az `ImageRenderingOptions` osztály pontos vezérlést biztosít. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Pro tipp:** Ha kihagyod a `Width` és `Height` értékeket, az Aspose.HTML a lap eredeti méretét használja, ami modern reszponzív tervezések esetén hatalmas lehet. A méretek megadása könnyű PNG‑t eredményez. + +## 4. lépés: HTML mentése PNG‑ként – Konverzió végrehajtása + +A dokumentummal és a beállításokkal készen állunk, hogy meghívjuk az `ImageConverter`‑t. Ez a lépés **HTML‑t PNG‑ként ment** a megadott helyre. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +A `using` blokk biztosítja, hogy a konverter felszabadítsa a natív erőforrásokat, ami különösen fontos hosszú futású szolgáltatásoknál. + +## 5. lépés: Az eredmény ellenőrzése – Gyors ellenőrzés + +A konverzió befejezése után érdemes megerősíteni, hogy a fájl létezik és a várt méretekkel rendelkezik. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Nyisd meg az `output.png`‑t bármelyik képnézőben. Látnod kell az eredeti HTML‑t 1024 × 768 pixelen, éles szöveggel és sima élekkel. + +## Teljes működő példa + +Mindent egyetlen, önálló programba fűzve: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Mentsd el `Program.cs`‑ként, cseréld le a `YOUR_DIRECTORY`‑t a tényleges mappára, és futtasd a `dotnet run` parancsot. A konzol lépésről‑lépésre végigvezeti a folyamatot, és megerősíti a PNG fájl létrehozását. + +## Gyakori kérdések és széljegyek + +### „Mi van, ha a HTML külső CSS‑t vagy képeket használ?” +Az Aspose.HTML automatikusan feloldja a relatív URL‑eket a forrásfájl könyvtára alapján. Győződj meg róla, hogy minden eszköz elérhető ugyanabban a mappában, vagy adj meg abszolút URL‑t. + +### „Renderelhetek egy konkrét elemet a teljes oldal helyett?” +Igen. Töltsd be a dokumentumot, keresd meg az elemet a `htmlDocument.QuerySelector`‑rel, és add át azt a `ImageConverter`‑nek. Az `Convert(IHTMLElement, string, ImageRenderingOptions)` API‑overload megoldja. + +### „Hogyan változtathatom meg a PNG háttérszínét?” +Állítsd be a `renderingOptions.BackgroundColor = System.Drawing.Color.White;`‑t (vagy bármely `System.Drawing.Color`‑t) a `Convert` meghívása előtt. + +### „Létezik-e mód JPEG helyett PNG‑t kapni?” +Cseréld le a kimeneti fájlkiterjesztést `.jpg`‑re, és opcionálisan állítsd be a `renderingOptions.ImageFormat = ImageFormat.Jpeg;`‑t. A konverter a kért formátumot fogja használni. + +## Teljesítmény tippek + +- **Használd újra az `ImageConverter`‑t**, ha sok HTML fájlt dolgozol fel egy kötegben; egyszeri létrehozása csökkenti a natív terhelést. +- **Korlátozd a viewport méretét** (`Width`/`Height`) a legkisebb szükséges méretre – ez drámai módon csökkenti a memóriahasználatot. +- **Kapcsold ki a felesleges funkciókat**, például a `UseAntialiasing`‑t egyszerű vonalrajzoknál; ez felgyorsítja a renderelést anélkül, hogy észrevehető minőségromlás történne. + +## Következő lépések + +Most, hogy tudod, hogyan **PNG‑t készíts HTML‑ből**, gondolkodj a munkafolyamat kibővítésén: + +- **Kötegelt feldolgozás** – egy könyvtár HTML fájljainak bejárása és bélyegképek generálása mindegyikhez. +- **Dinamikus HTML generálás** – Razor sablonok vagy `StringBuilder` kombinálása az Aspose.HTML‑lel, hogy futás közben képeket hozz létre (pl. diagramok, tanúsítványok, számlák). +- **Integráció web‑API‑kkal** – egy végpont kiépítése, amely nyers HTML‑t fogad és PNG‑streamet ad vissza, tökéletes SaaS szolgáltatásokhoz. + +Ezek az ötletek mind ugyanazokra az alapelvekre épülnek, amelyeket már bemutattunk: `HTMLDocument` betöltése, `ImageRenderingOptions` konfigurálása, és `ImageConverter` meghívása. + +--- + +### TL;DR + +Bemutattunk egy egyszerű, termelés‑kész módszert a **PNG létrehozása HTML‑ből** az Aspose.HTML for .NET használatával. Az oktatóanyag lépésről‑lépésre végigvezeti a csomag telepítését, a HTML betöltését, a méret és minőség beállítását, a PNG‑re konvertálást, valamint az eredmény ellenőrzését. A teljes forráskóddal könnyedén adaptálhatod a mintát kötegelt feladatokra, webszolgáltatásokra vagy bármely olyan szituációra, ahol **HTML‑t PNG‑vé konvertálsz**, **HTML‑t képként renderelsz**, **kép méretét állítod HTML‑ben**, és **HTML‑t PNG‑ként mented**. Jó kódolást! + +--- + +![Diagram showing the flow from HTML file → Aspose.HTML → PNG output (create png from html)](placeholder-image.png "HTML fájl → Aspose.HTML → PNG kimenet folyamatábra") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/indonesian/net/generate-jpg-and-png-images/_index.md b/html/indonesian/net/generate-jpg-and-png-images/_index.md index c39a02059..4314b74bc 100644 --- a/html/indonesian/net/generate-jpg-and-png-images/_index.md +++ b/html/indonesian/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Mengintegrasikan Aspose.HTML untuk .NET ke dalam proyek .NET Anda tidak akan mer Pelajari cara membuat halaman web dinamis menggunakan Aspose.HTML untuk .NET. Tutorial langkah demi langkah ini mencakup prasyarat, namespace, dan rendering HTML ke gambar. ### [Hasilkan Gambar PNG dengan ImageDevice di .NET dengan Aspose.HTML](./generate-png-images-by-imagedevice/) Pelajari cara menggunakan Aspose.HTML untuk .NET guna memanipulasi dokumen HTML, mengonversi HTML menjadi gambar, dan banyak lagi. Tutorial langkah demi langkah dengan Tanya Jawab Umum. +### [Buat PNG dari HTML – Panduan Lengkap C# dengan Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Pelajari cara mengonversi HTML menjadi gambar PNG menggunakan C# dengan Aspose.HTML dalam panduan langkah demi langkah. ## Kesimpulan @@ -52,4 +54,4 @@ Jadi, tunggu apa lagi? Mulailah menjelajahi dunia konversi HTML ke gambar dengan {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/indonesian/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/indonesian/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..2878a2566 --- /dev/null +++ b/html/indonesian/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,259 @@ +--- +category: general +date: 2026-01-10 +description: Buat PNG dari HTML dengan cepat menggunakan Aspose.HTML. Pelajari cara + mengonversi HTML ke PNG, merender HTML sebagai gambar, mengatur ukuran gambar HTML, + dan menyimpan HTML sebagai PNG dalam satu tutorial. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: id +og_description: Buat PNG dari HTML dengan Aspose.HTML. Panduan ini menunjukkan cara + mengonversi HTML ke PNG, merender HTML sebagai gambar, mengatur ukuran gambar HTML, + dan menyimpan HTML sebagai PNG. +og_title: Buat PNG dari HTML – Tutorial C# Lengkap +tags: +- C# +- Aspose.HTML +- Image Rendering +title: Buat PNG dari HTML – Panduan Lengkap C# dengan Aspose.HTML +url: /id/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Membuat PNG dari HTML – Tutorial Lengkap C# + +Pernahkah Anda perlu **membuat PNG dari HTML** tetapi tidak yakin pustaka mana yang akan memberikan hasil pixel‑perfect? Anda tidak sendirian. Banyak pengembang mengalami kebuntuan ketika mencoba mengubah halaman web dinamis menjadi gambar statis untuk laporan, thumbnail, atau pratinjau email. + +Dalam panduan ini kami akan membahas solusi praktis end‑to‑end yang **mengonversi HTML ke PNG**, **merender HTML sebagai gambar**, memungkinkan Anda **mengatur ukuran gambar HTML**, dan akhirnya **menyimpan HTML sebagai PNG**—semua dengan Aspose.HTML untuk .NET. Pada akhir tutorial Anda akan memiliki aplikasi konsol siap‑jalankan yang menghasilkan file PNG tajam dengan ukuran yang Anda tentukan. + +## Apa yang Anda Butuhkan + +Sebelum kita masuk ke kode, pastikan Anda memiliki hal‑hal berikut: + +- **.NET 6.0** atau yang lebih baru (API juga berfungsi di .NET Framework, tetapi .NET 6 adalah pilihan terbaik). +- **Aspose.HTML for .NET** – Anda dapat mengunduhnya dari NuGet (`Install-Package Aspose.HTML`). +- Sebuah file **input.html** sederhana yang ingin Anda render. Apa saja mulai dari templat statis hingga halaman yang sepenuhnya bergaya dapat digunakan. +- Visual Studio, Rider, atau editor apa pun yang Anda sukai. + +Tidak ada dependensi tambahan, tidak ada browser headless, hanya pustaka .NET yang bersih. + +## Langkah 1: Membuat PNG dari HTML – Penyiapan Proyek + +Pertama, buat proyek konsol baru dan tambahkan paket Aspose.HTML. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Setelah paket dipulihkan, buka `Program.cs`. Kami akan mengganti konten default dengan contoh lengkap nanti, tetapi untuk saat ini cukup pastikan proyek dapat dibangun: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Jalankan `dotnet run`. Jika Anda melihat salam, semuanya sudah siap. + +## Langkah 2: Mengonversi HTML ke PNG – Memuat Dokumen + +Sekarang kita benar‑benar **mengonversi HTML ke PNG**. Hal pertama yang kita perlukan adalah objek `HTMLDocument` yang menunjuk ke file sumber kita. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Mengapa ini penting:** `HTMLDocument` mem‑parsing markup, menerapkan CSS, dan membangun DOM yang kemudian dapat dirasterisasi oleh Aspose.HTML. Melewatkan langkah ini berarti renderer tidak memiliki apa‑apa untuk diproses. + +## Langkah 3: Merender HTML sebagai Gambar – Menentukan Opsi Rendering Gambar + +Rendering adalah tahap di mana Anda **mengatur ukuran gambar HTML** dan menyesuaikan pengaturan kualitas seperti antialiasing. Kelas `ImageRenderingOptions` memberikan kontrol yang sangat detail. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Tips pro:** Jika Anda tidak menyertakan `Width` dan `Height`, Aspose.HTML akan menggunakan ukuran intrinsik halaman, yang dapat sangat besar untuk desain responsif modern. Menentukan dimensi menjaga PNG tetap ringan. + +## Langkah 4: Menyimpan HTML sebagai PNG – Melakukan Konversi + +Dengan dokumen dan opsi yang siap, kita panggil `ImageConverter`. Langkah ini **menyimpan HTML sebagai PNG** ke lokasi yang Anda pilih. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +Blok `using` memastikan konverter melepaskan semua sumber daya native, yang sangat penting pada layanan yang berjalan lama. + +## Langkah 5: Memverifikasi Hasil – Pemeriksaan Cepat + +Setelah konversi selesai, ada baiknya memastikan file ada dan memiliki dimensi yang diharapkan. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Buka `output.png` di penampil gambar apa pun. Anda seharusnya melihat HTML asli Anda dirender pada 1024 × 768 piksel, dengan teks tajam dan tepi halus. + +## Contoh Lengkap yang Berfungsi + +Menggabungkan semuanya, Anda akan mendapatkan satu program mandiri: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Simpan sebagai `Program.cs`, ganti `YOUR_DIRECTORY` dengan jalur folder yang sebenarnya, dan jalankan `dotnet run`. Konsol akan memandu Anda melalui setiap tahap dan mengonfirmasi pembuatan file PNG. + +## Pertanyaan Umum & Kasus Khusus + +### “Bagaimana jika HTML saya menggunakan CSS atau gambar eksternal?” +Aspose.HTML secara otomatis menyelesaikan URL relatif berdasarkan direktori file sumber. Pastikan semua aset dapat diakses dari folder yang sama atau berikan URL absolut. + +### “Bisakah saya merender elemen tertentu saja, bukan seluruh halaman?” +Ya. Muat dokumen, temukan elemen dengan `htmlDocument.QuerySelector`, dan berikan node tersebut ke `ImageConverter`. Overload API `Convert(IHTMLElement, string, ImageRenderingOptions)` melakukan tugas ini. + +### “Bagaimana cara mengubah warna latar belakang PNG?” +Setel `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (atau `System.Drawing.Color` lain yang Anda inginkan) sebelum memanggil `Convert`. + +### “Apakah ada cara mendapatkan JPEG alih‑alih PNG?” +Ubah ekstensi file output menjadi `.jpg` dan opsional setel `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. Konverter akan menghormati format yang diminta. + +## Tips Kinerja + +- **Gunakan kembali `ImageConverter`** jika Anda memproses banyak file HTML dalam batch; membuatnya sekali saja mengurangi overhead native. +- **Batasi ukuran viewport** (`Width`/`Height`) ke dimensi terkecil yang benar‑benar Anda butuhkan—ini secara drastis mengurangi penggunaan memori. +- **Matikan fitur yang tidak diperlukan** seperti `UseAntialiasing` untuk gambar garis sederhana; ini mempercepat rendering tanpa kehilangan kualitas yang signifikan. + +## Langkah Selanjutnya + +Sekarang Anda tahu cara **membuat PNG dari HTML**, pertimbangkan untuk memperluas alur kerja: + +- **Pemrosesan batch** – iterasi melalui direktori berisi file HTML dan hasilkan thumbnail untuk masing‑masing. +- **Pembuatan HTML dinamis** – gabungkan template Razor atau `StringBuilder` dengan Aspose.HTML untuk menghasilkan gambar secara langsung (misalnya grafik, sertifikat, atau faktur). +- **Integrasi dengan API web** – buat endpoint yang menerima HTML mentah dan mengembalikan aliran PNG, cocok untuk layanan SaaS. + +Setiap ide ini dibangun di atas konsep inti yang telah kami bahas: memuat `HTMLDocument`, mengonfigurasi `ImageRenderingOptions`, dan memanggil `ImageConverter`. + +--- + +### TL;DR + +Kami telah menunjukkan cara sederhana dan siap produksi untuk **membuat PNG dari HTML** menggunakan Aspose.HTML untuk .NET. Tutorial ini memandu Anda melalui instalasi paket, memuat HTML, mengatur ukuran dan kualitas, mengonversi ke PNG, serta memverifikasi hasil. Dengan kode sumber lengkap di tangan, Anda dapat menyesuaikan pola ini untuk pekerjaan batch, layanan web, atau skenario apa pun di mana Anda perlu **mengonversi HTML ke PNG**, **merender HTML sebagai gambar**, **mengatur ukuran gambar HTML**, dan **menyimpan HTML sebagai PNG**. Selamat coding! + +--- + +![Diagram showing the flow from HTML file → Aspose.HTML → PNG output (create png from html)](placeholder-image.png "Create PNG from HTML flow diagram") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/italian/net/generate-jpg-and-png-images/_index.md b/html/italian/net/generate-jpg-and-png-images/_index.md index 436e507d9..31c01a6f9 100644 --- a/html/italian/net/generate-jpg-and-png-images/_index.md +++ b/html/italian/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Integrare Aspose.HTML per .NET nei tuoi progetti .NET è semplice. La libreria Scopri come creare pagine web dinamiche usando Aspose.HTML per .NET. Questo tutorial passo dopo passo riguarda i prerequisiti, gli spazi dei nomi e il rendering di HTML in immagini. ### [Genera immagini PNG tramite ImageDevice in .NET con Aspose.HTML](./generate-png-images-by-imagedevice/) Impara a usare Aspose.HTML per .NET per manipolare documenti HTML, convertire HTML in immagini e altro ancora. Tutorial passo dopo passo con FAQ. +### [Crea PNG da HTML – Guida completa C# con Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Scopri come generare file PNG da HTML usando Aspose.HTML in C#, con esempi dettagliati e consigli pratici. ## Conclusione @@ -52,4 +54,4 @@ Quindi, perché aspettare? Inizia a esplorare il mondo della conversione da HTML {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/italian/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/italian/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..806db0207 --- /dev/null +++ b/html/italian/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,259 @@ +--- +category: general +date: 2026-01-10 +description: Crea PNG da HTML rapidamente con Aspose.HTML. Scopri come convertire + HTML in PNG, rendere HTML come immagine, impostare le dimensioni dell'immagine HTML + e salvare HTML come PNG in un unico tutorial. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: it +og_description: Crea PNG da HTML con Aspose.HTML. Questa guida mostra come convertire + HTML in PNG, renderizzare HTML come immagine, impostare la dimensione dell'immagine + HTML e salvare HTML come PNG. +og_title: Crea PNG da HTML – Tutorial completo C# +tags: +- C# +- Aspose.HTML +- Image Rendering +title: Crea PNG da HTML – Guida completa C# con Aspose.HTML +url: /it/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Crea PNG da HTML – Tutorial Completo in C# + +Ti è mai capitato di **creare PNG da HTML** senza sapere quale libreria ti garantisse risultati pixel‑perfect? Non sei solo. Molti sviluppatori si trovano impassibili quando cercano di trasformare una pagina web dinamica in un’immagine statica per report, miniature o anteprime email. + +In questa guida percorreremo una soluzione pratica, end‑to‑end che **converte HTML in PNG**, **renderizza HTML come immagine**, ti permette di **impostare la dimensione dell’immagine HTML**, e infine **salva HTML come PNG**—tutto con Aspose.HTML per .NET. Alla fine avrai un’app console pronta all’uso che genera un file PNG nitido esattamente delle dimensioni che specifichi. + +## Cosa Ti Serve + +Prima di immergerci nel codice, assicurati di avere: + +- **.NET 6.0** o successivo (l’API funziona anche su .NET Framework, ma .NET 6 è il punto ideale). +- **Aspose.HTML per .NET** – lo puoi ottenere da NuGet (`Install-Package Aspose.HTML`). +- Un semplice file **input.html** che desideri renderizzare. Qualsiasi cosa, da un template statico a una pagina completamente stilizzata, va bene. +- Visual Studio, Rider o qualsiasi editor tu preferisca. + +Nessuna dipendenza aggiuntiva, nessun browser headless, solo una libreria .NET pulita. + +## Passo 1: Crea PNG da HTML – Configurazione del Progetto + +Per prima cosa, crea un nuovo progetto console e aggiungi il pacchetto Aspose.HTML. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Una volta ripristinato il pacchetto, apri `Program.cs`. Sostituiremo il contenuto predefinito con l’esempio completo più avanti, ma per ora verifica semplicemente che il progetto si compili: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Esegui `dotnet run`. Se vedi il messaggio di benvenuto, sei pronto. + +## Passo 2: Converti HTML in PNG – Carica il Documento + +Ora convertiamo effettivamente **HTML in PNG**. La prima cosa di cui abbiamo bisogno è un oggetto `HTMLDocument` che punti al nostro file sorgente. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Perché è importante:** `HTMLDocument` analizza il markup, applica il CSS e costruisce un DOM che Aspose.HTML può successivamente rasterizzare. Saltare questo passaggio significa che il renderer non ha nulla su cui lavorare. + +## Passo 3: Renderizza HTML come Immagine – Definisci le Opzioni di Rendering + +Il rendering è il punto in cui **imposti la dimensione dell’immagine HTML** e regoli impostazioni di qualità come l’antialiasing. La classe `ImageRenderingOptions` ti offre un controllo fine. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Consiglio professionale:** Se ometti `Width` e `Height`, Aspose.HTML utilizzerà la dimensione intrinseca della pagina, che può essere enorme per i design responsivi moderni. Specificare le dimensioni mantiene il PNG leggero. + +## Passo 4: Salva HTML come PNG – Esegui la Conversione + +Con il documento e le opzioni pronti, chiamiamo `ImageConverter`. Questo passaggio **salva HTML come PNG** nella posizione che scegli. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +Il blocco `using` garantisce che il converter rilasci eventuali risorse native, cosa particolarmente importante in servizi a lunga esecuzione. + +## Passo 5: Verifica il Risultato – Controllo Rapido + +Al termine della conversione, è buona pratica verificare che il file esista e abbia le dimensioni previste. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Apri `output.png` con qualsiasi visualizzatore di immagini. Dovresti vedere il tuo HTML originale renderizzato a 1024 × 768 pixel, con testo nitido e bordi lisci. + +## Esempio Completo + +Mettendo tutto insieme ottieni un unico programma autonomo: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Salva questo file come `Program.cs`, sostituisci `YOUR_DIRECTORY` con il percorso reale della cartella, ed esegui `dotnet run`. La console ti guiderà attraverso ogni fase e confermerà la creazione del file PNG. + +## Domande Frequenti & Casi Limite + +### “E se il mio HTML utilizza CSS o immagini esterne?” +Aspose.HTML risolve automaticamente gli URL relativi basandosi sulla directory del file sorgente. Assicurati solo che tutte le risorse siano raggiungibili dalla stessa cartella o fornisci un URL assoluto. + +### “Posso renderizzare un elemento specifico invece dell’intera pagina?” +Sì. Carica il documento, individua l’elemento con `htmlDocument.QuerySelector`, e passa quel nodo a `ImageConverter`. La sovraccarico `Convert(IHTMLElement, string, ImageRenderingOptions)` fa al caso tuo. + +### “Come cambio il colore di sfondo del PNG?” +Imposta `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (oppure qualsiasi `System.Drawing.Color` desideri) prima di chiamare `Convert`. + +### “C’è un modo per ottenere un JPEG invece di PNG?” +Cambia l’estensione del file di output in `.jpg` e, opzionalmente, imposta `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. Il converter rispetterà il formato richiesto. + +## Suggerimenti per le Prestazioni + +- **Riutilizza l’`ImageConverter`** se devi elaborare molti file HTML in batch; crearne uno solo riduce l’overhead nativo. +- **Limita le dimensioni del viewport** (`Width`/`Height`) alle dimensioni minime realmente necessarie—questo riduce drasticamente l’uso di memoria. +- **Disattiva funzionalità non necessarie** come `UseAntialiasing` per grafica lineare semplice; velocizza il rendering senza perdita di qualità percepibile. + +## Prossimi Passi + +Ora che sai **creare PNG da HTML**, considera di estendere il flusso di lavoro: + +- **Elaborazione batch** – itera su una cartella di file HTML e genera miniature per ciascuno. +- **Generazione dinamica di HTML** – combina template Razor o `StringBuilder` con Aspose.HTML per produrre immagini al volo (es. grafici, certificati o fatture). +- **Integrazione con API web** – espone un endpoint che accetta HTML grezzo e restituisce uno stream PNG, perfetto per servizi SaaS. + +Tutte queste idee si basano sugli stessi concetti fondamentali trattati: caricamento di un `HTMLDocument`, configurazione di `ImageRenderingOptions` e chiamata a `ImageConverter`. + +--- + +### TL;DR + +Abbiamo mostrato un metodo semplice e pronto per la produzione per **creare PNG da HTML** usando Aspose.HTML per .NET. Il tutorial ti guida attraverso l’installazione del pacchetto, il caricamento dell’HTML, l’impostazione di dimensioni e qualità, la conversione in PNG e la verifica del risultato. Con il codice completo a disposizione, puoi adattare lo schema a lavori batch, servizi web o qualsiasi scenario in cui devi **convertire HTML in PNG**, **renderizzare HTML come immagine**, **impostare la dimensione dell’immagine HTML** e **salvare HTML come PNG**. Buon coding! + +--- + +![Diagram showing the flow from HTML file → Aspose.HTML → PNG output (create png from html)](placeholder-image.png "Diagramma del flusso da file HTML → Aspose.HTML → output PNG (crea png da html)") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/japanese/net/generate-jpg-and-png-images/_index.md b/html/japanese/net/generate-jpg-and-png-images/_index.md index 9bab5ba54..f671f69ba 100644 --- a/html/japanese/net/generate-jpg-and-png-images/_index.md +++ b/html/japanese/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Aspose.HTML for .NET を .NET プロジェクトに統合するのは簡単で Aspose.HTML for .NET を使用して動的な Web ページを作成する方法を学習します。このステップ バイ ステップのチュートリアルでは、前提条件、名前空間、および HTML から画像へのレンダリングについて説明します。 ### [Aspose.HTML を使用して .NET で ImageDevice によって PNG 画像を生成する](./generate-png-images-by-imagedevice/) Aspose.HTML for .NET を使用して HTML ドキュメントを操作したり、HTML を画像に変換したりする方法を学びます。FAQ 付きのステップバイステップのチュートリアルです。 +### [HTML から PNG を作成 – Aspose.HTML 完全 C# ガイド](./create-png-from-html-full-c-guide-with-aspose-html/) +Aspose.HTML for .NET を使って、HTML から高品質な PNG 画像を生成する完全な C# 手順を解説します。 ## 結論 @@ -52,4 +54,4 @@ Aspose.HTML for .NET を使用して HTML ドキュメントを操作したり {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/japanese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/japanese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..2911feaf5 --- /dev/null +++ b/html/japanese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,255 @@ +--- +category: general +date: 2026-01-10 +description: Aspose.HTML を使用して HTML から PNG をすばやく作成します。HTML を PNG に変換する方法、HTML を画像としてレンダリングする方法、HTML + の画像サイズを設定する方法、そして HTML を PNG として保存する方法を、1 つのチュートリアルで学びましょう。 +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: ja +og_description: Aspose.HTML を使用して HTML から PNG を作成します。このガイドでは、HTML を PNG に変換する方法、HTML + を画像としてレンダリングする方法、HTML の画像サイズを設定する方法、そして HTML を PNG として保存する方法を示します。 +og_title: HTMLからPNGを作成 – 完全なC#チュートリアル +tags: +- C# +- Aspose.HTML +- Image Rendering +title: HTMLからPNGを作成 – Aspose.HTML を使用した完全な C# ガイド +url: /ja/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# HTML から PNG を作成 – 完全 C# チュートリアル + +HTML から PNG を **作成** したいと思ったことはありますか？しかし、どのライブラリがピクセル単位で完璧な結果を提供するか分からないことも多いでしょう。あなたは一人ではありません。多くの開発者が、レポート、サムネイル、またはメールプレビュー用に動的なウェブページを静的な画像に変換しようとして壁にぶつかります。 + +このガイドでは、**HTML を PNG に変換**し、**HTML を画像としてレンダリング**し、**画像サイズ HTML を設定**でき、最後に **HTML を PNG として保存** する実用的なエンドツーエンドのソリューションを Aspose.HTML for .NET を使って解説します。最後まで読むと、指定したサイズの鮮明な PNG ファイルを出力する、すぐに実行可能なコンソールアプリが手に入ります。 + +## 必要なもの + +- **.NET 6.0** 以降（API は .NET Framework でも動作しますが、.NET 6 が最適です）。 +- **Aspose.HTML for .NET** – NuGet から取得できます（`Install-Package Aspose.HTML`）。 +- レンダリングしたいシンプルな **input.html** ファイル。静的テンプレートから完全にスタイルが適用されたページまで何でも構いません。 +- Visual Studio、Rider、またはお好みのエディタ。 + +余計な依存関係やヘッドレスブラウザは不要で、クリーンな .NET ライブラリだけです。 + +## ステップ 1: HTML から PNG を作成 – プロジェクトのセットアップ + +まず、新しいコンソールプロジェクトを作成し、Aspose.HTML パッケージを導入します。 + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +パッケージが復元されたら、`Program.cs` を開きます。後でデフォルトの内容を完全なサンプルに置き換えますが、まずはプロジェクトがビルドできることを確認してください。 + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +`dotnet run` を実行します。挨拶が表示されれば、準備完了です。 + +## ステップ 2: HTML を PNG に変換 – ドキュメントのロード + +ここで実際に **HTML を PNG に変換** します。最初に必要なのは、ソースファイルを指す `HTMLDocument` オブジェクトです。 + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **重要な理由:** `HTMLDocument` はマークアップを解析し、CSS を適用し、Aspose.HTML が後でラスタライズできる DOM を構築します。このステップを省略すると、レンダラは何も処理できません。 + +## ステップ 3: HTML を画像としてレンダリング – 画像レンダリングオプションの定義 + +レンダリングでは **画像サイズ HTML を設定** し、アンチエイリアスなどの品質設定を調整します。`ImageRenderingOptions` クラスで細かい制御が可能です。 + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **プロのコツ:** `Width` と `Height` を省略すると、Aspose.HTML はページの固有サイズを使用しますが、モダンなレスポンシブデザインでは非常に大きくなることがあります。寸法を指定することで PNG を軽量に保てます。 + +## ステップ 4: HTML を PNG として保存 – 変換の実行 + +ドキュメントとオプションの準備ができたら、`ImageConverter` を呼び出します。このステップで **HTML を PNG として保存** します。保存先は任意です。 + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +`using` ブロックはコンバータがネイティブリソースを解放することを保証し、長時間実行されるサービスでは特に重要です。 + +## ステップ 5: 結果の検証 – クイックチェック + +変換が完了したら、ファイルが存在し、期待通りの寸法であることを確認すると良いでしょう。 + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +`output.png` を任意の画像ビューアで開きます。元の HTML が 1024 × 768 ピクセルでレンダリングされ、テキストは鮮明でエッジは滑らかに表示されるはずです。 + +## 完全な動作例 + +すべてをまとめると、単一の自己完結型プログラムになります: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +これを `Program.cs` として保存し、`YOUR_DIRECTORY` を実際のフォルダパスに置き換えて `dotnet run` を実行してください。コンソールが各ステップを案内し、PNG ファイルの作成を確認します。 + +## よくある質問とエッジケース + +### 「HTML が外部 CSS や画像を使用している場合は？」 + +Aspose.HTML はソースファイルのディレクトリを基準に相対 URL を自動的に解決します。すべてのアセットが同じフォルダからアクセス可能であるか、絶対 URL を提供してください。 + +### 「ページ全体ではなく特定の要素だけをレンダリングできますか？」 + +はい。ドキュメントをロードし、`htmlDocument.QuerySelector` で要素を取得し、そのノードを `ImageConverter` に渡します。API のオーバーロード `Convert(IHTMLElement, string, ImageRenderingOptions)` がそれを実現します。 + +### 「PNG の背景色を変更するには？」 + +`Convert` を呼び出す前に `renderingOptions.BackgroundColor = System.Drawing.Color.White;`（または任意の `System.Drawing.Color`）を設定します。 + +### 「PNG ではなく JPEG を取得する方法はありますか？」 + +出力ファイルの拡張子を `.jpg` に変更し、必要に応じて `renderingOptions.ImageFormat = ImageFormat.Jpeg;` を設定します。コンバータは要求された形式を尊重します。 + +## パフォーマンスのヒント + +- **`ImageConverter` を再利用** すると、バッチで多数の HTML ファイルを処理する際に、1 回だけ作成することでネイティブのオーバーヘッドが削減されます。 +- **ビューポートサイズ**（`Width`/`Height`）を実際に必要な最小寸法に制限すると、メモリ使用量が大幅に削減されます。 +- シンプルな線画の場合は `UseAntialiasing` などの不要な機能を **オフ** にすると、品質の低下がほとんどなくレンダリングが高速化します。 + +## 次のステップ + +これで **HTML から PNG を作成** する方法が分かったので、ワークフローを拡張することを検討してください: + +- **バッチ処理** – HTML ファイルが入ったディレクトリをループし、各ファイルのサムネイルを生成します。 +- **動的 HTML 生成** – Razor テンプレートや StringBuilder と Aspose.HTML を組み合わせて、ザフライで画像を生成します（例: チャート、証明書、請求書）。 +- **Web API との統合** – 生の HTML を受け取り PNG ストリームを返すエンドポイントを公開し、SaaS サービスに最適です。 + +これらのアイデアはすべて、`HTMLDocument` のロード、`ImageRenderingOptions` の設定、`ImageConverter` の呼び出しという、ここで紹介した基本概念に基づいています。 + +### TL;DR + +このチュートリアルでは、Aspose.HTML for .NET を使用して **HTML から PNG を作成** するシンプルで本番環境向けの方法を示しました。パッケージのインストール、HTML のロード、サイズと品質の設定、PNG への変換、結果の検証まで順を追って解説しています。完全なソースコードが手元にあれば、バッチジョブや Web サービス、あるいは **HTML を PNG に変換**、**HTML を画像としてレンダリング**、**画像サイズ HTML を設定**、**HTML を PNG として保存** が必要なあらゆるシナリオにこのパターンを適用できます。コーディングを楽しんでください！ + +![HTML ファイル → Aspose.HTML → PNG 出力 のフローを示す図（HTML から PNG を作成）](placeholder-image.png "HTML から PNG を作成するフローダイアグラム") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/korean/net/generate-jpg-and-png-images/_index.md b/html/korean/net/generate-jpg-and-png-images/_index.md index 1c3413cc6..0b7c7eac7 100644 --- a/html/korean/net/generate-jpg-and-png-images/_index.md +++ b/html/korean/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Aspose.HTML for .NET을 .NET 프로젝트에 통합하는 것은 번거롭지 .NET용 Aspose.HTML을 사용하여 동적 웹 페이지를 만드는 방법을 알아보세요. 이 단계별 튜토리얼은 필수 구성 요소, 네임스페이스, HTML을 이미지로 렌더링하는 방법을 다룹니다. ### [Aspose.HTML을 사용하여 .NET에서 ImageDevice로 PNG 이미지 생성](./generate-png-images-by-imagedevice/) .NET용 Aspose.HTML을 사용하여 HTML 문서를 조작하고, HTML을 이미지로 변환하는 등의 방법을 알아보세요. FAQ가 포함된 단계별 튜토리얼. +### [Aspose.HTML을 사용하여 HTML에서 PNG 만들기 – 전체 C# 가이드](./create-png-from-html-full-c-guide-with-aspose-html/) +Aspose.HTML을 활용해 HTML을 PNG 이미지로 변환하는 전체 C# 단계별 가이드를 확인하세요. ## 결론 @@ -52,4 +54,4 @@ Aspose.HTML for .NET을 .NET 프로젝트에 통합하는 것은 번거롭지 {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/korean/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/korean/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..77d690ce5 --- /dev/null +++ b/html/korean/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,259 @@ +--- +category: general +date: 2026-01-10 +description: Aspose.HTML을 사용하여 HTML을 빠르게 PNG로 만들기. HTML을 PNG로 변환하는 방법, HTML을 이미지로 + 렌더링하는 방법, 이미지 크기를 HTML에 맞게 설정하는 방법, 그리고 HTML을 PNG로 저장하는 방법을 하나의 튜토리얼에서 배워보세요. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: ko +og_description: Aspose.HTML를 사용하여 HTML에서 PNG 만들기. 이 가이드는 HTML을 PNG로 변환하고, HTML을 이미지로 + 렌더링하며, 이미지 크기를 HTML로 설정하고, HTML을 PNG로 저장하는 방법을 보여줍니다. +og_title: Create PNG from HTML – Complete C# Tutorial +tags: +- C# +- Aspose.HTML +- Image Rendering +title: HTML에서 PNG 만들기 – Aspose.HTML를 사용한 전체 C# 가이드 +url: /ko/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# HTML에서 PNG 만들기 – 완전한 C# 튜토리얼 + +HTML에서 PNG를 **생성**해야 할 때, 어느 라이브러리가 픽셀 단위로 완벽한 결과를 제공할지 몰라 고민한 적이 있나요? 당신만 그런 것이 아닙니다. 많은 개발자들이 동적인 웹 페이지를 보고서, 썸네일, 혹은 이메일 미리보기용 정적 이미지로 변환하려 할 때 벽에 부딪힙니다. + +이 가이드에서는 **HTML을 PNG로 변환**, **HTML을 이미지로 렌더링**, **이미지 크기 HTML 설정**, 그리고 최종적으로 **HTML을 PNG로 저장**하는 실용적인 엔드‑투‑엔드 솔루션을 Aspose.HTML for .NET을 사용해 단계별로 설명합니다. 끝까지 따라오면 지정한 크기의 선명한 PNG 파일을 출력하는 실행 가능한 콘솔 앱을 얻게 됩니다. + +## 필요 사항 + +- **.NET 6.0** 이상 (API는 .NET Framework에서도 동작하지만, .NET 6이 가장 적합합니다). +- **Aspose.HTML for .NET** – NuGet(`Install-Package Aspose.HTML`)에서 가져올 수 있습니다. +- 렌더링하고 싶은 간단한 **input.html** 파일. 정적 템플릿이든 완전하게 스타일링된 페이지든 상관없습니다. +- Visual Studio, Rider 또는 선호하는 편집기. + +추가 종속성도 없고, 헤드리스 브라우저도 필요하지 않으며, 깔끔한 .NET 라이브러리만 있으면 됩니다. + +## 단계 1: HTML에서 PNG 만들기 – 프로젝트 설정 + +먼저 새 콘솔 프로젝트를 만들고 Aspose.HTML 패키지를 추가합니다. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +패키지가 복원되면 `Program.cs`를 엽니다. 나중에 전체 예제로 교체할 것이지만, 지금은 프로젝트가 빌드되는지 확인만 하면 됩니다. + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +`dotnet run`을 실행합니다. 인사말이 보이면 준비가 된 것입니다. + +## 단계 2: HTML을 PNG로 변환 – 문서 로드 + +이제 실제로 **HTML을 PNG로 변환**합니다. 가장 먼저 필요한 것은 소스 파일을 가리키는 `HTMLDocument` 객체입니다. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **왜 중요한가:** `HTMLDocument`는 마크업을 파싱하고 CSS를 적용하며, Aspose.HTML이 이후에 래스터화할 수 있는 DOM을 구축합니다. 이 단계를 건너뛰면 렌더러가 작업할 것이 없습니다. + +## 단계 3: HTML을 이미지로 렌더링 – 이미지 렌더링 옵션 정의 + +렌더링 단계에서 **이미지 크기 HTML 설정**과 안티앨리어싱 같은 품질 옵션을 조정합니다. `ImageRenderingOptions` 클래스가 세밀한 제어를 제공합니다. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **프로 팁:** `Width`와 `Height`를 생략하면 Aspose.HTML은 페이지의 고유 크기를 사용합니다. 최신 반응형 디자인에서는 이 크기가 매우 클 수 있습니다. 차원을 지정하면 PNG 파일이 가벼워집니다. + +## 단계 4: HTML을 PNG로 저장 – 변환 수행 + +문서와 옵션이 준비되었으면 `ImageConverter`를 호출합니다. 이 단계에서 **HTML을 PNG로 저장**하고 원하는 위치에 파일을 생성합니다. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +`using` 블록은 변환기가 네이티브 리소스를 해제하도록 보장합니다. 이는 장시간 실행되는 서비스에서 특히 중요합니다. + +## 단계 5: 결과 확인 – 빠른 체크 + +변환이 완료된 후 파일이 존재하고 기대한 차원인지 확인하는 것이 좋습니다. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +`output.png`를 이미지 뷰어에서 열어보세요. 원본 HTML이 1024 × 768 픽셀로 렌더링되어 선명한 텍스트와 부드러운 가장자리를 보여줄 것입니다. + +## 전체 작업 예제 + +모든 코드를 하나로 합치면 다음과 같은 단일, 자체 포함 프로그램이 됩니다: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +이 파일을 `Program.cs`로 저장하고 `YOUR_DIRECTORY`를 실제 폴더 경로로 바꾼 뒤 `dotnet run`을 실행합니다. 콘솔이 각 단계를 안내하고 PNG 파일 생성 여부를 확인해 줍니다. + +## 일반적인 질문 및 엣지 케이스 + +### “HTML이 외부 CSS나 이미지를 사용한다면?” + +Aspose.HTML은 소스 파일이 위치한 디렉터리를 기준으로 상대 URL을 자동으로 해결합니다. 모든 자산이 같은 폴더에 있거나 절대 URL을 제공하면 됩니다. + +### “전체 페이지가 아니라 특정 요소만 렌더링할 수 있나요?” + +가능합니다. 문서를 로드한 뒤 `htmlDocument.QuerySelector`로 원하는 요소를 찾고 해당 노드를 `ImageConverter`에 전달하면 됩니다. `Convert(IHTMLElement, string, ImageRenderingOptions)` 오버로드가 이를 지원합니다. + +### “PNG 배경색을 바꾸려면 어떻게 하나요?” + +`renderingOptions.BackgroundColor = System.Drawing.Color.White;` (또는 원하는 `System.Drawing.Color`)를 `Convert` 호출 전에 설정하면 됩니다. + +### “PNG 대신 JPEG을 얻을 수 있나요?” + +출력 파일 확장자를 `.jpg`로 바꾸고 필요에 따라 `renderingOptions.ImageFormat = ImageFormat.Jpeg;`를 설정하면 됩니다. 변환기가 요청된 형식을 그대로 사용합니다. + +## 성능 팁 + +- **`ImageConverter` 재사용** – 배치로 여러 HTML 파일을 처리할 경우 한 번 생성해 두면 네이티브 오버헤드가 감소합니다. +- **뷰포트 크기 제한** (`Width`/`Height`) – 실제로 필요한 최소 차원만 지정하면 메모리 사용량이 크게 줄어듭니다. +- **불필요한 기능 비활성화** – 간단한 선 그림에는 `UseAntialiasing`을 끄면 품질 저하 없이 렌더링 속도가 빨라집니다. + +## 다음 단계 + +이제 **HTML에서 PNG 만들기** 방법을 알았으니 워크플로를 확장해 보세요: + +- **배치 처리** – 디렉터리의 HTML 파일들을 순회하며 각각 썸네일을 생성합니다. +- **동적 HTML 생성** – Razor 템플릿이나 `StringBuilder`와 Aspose.HTML을 결합해 실시간 이미지(차트, 인증서, 인보이스 등)를 만들어냅니다. +- **웹 API와 통합** – 원시 HTML을 받아 PNG 스트림을 반환하는 엔드포인트를 제공하면 SaaS 서비스에 최적입니다. + +이 모든 아이디어는 `HTMLDocument` 로드, `ImageRenderingOptions` 설정, `ImageConverter` 호출이라는 핵심 개념을 기반으로 합니다. + +--- + +### TL;DR + +Aspose.HTML for .NET을 사용해 **HTML에서 PNG 만들기**를 간단하고 프로덕션 수준으로 구현하는 방법을 보여드렸습니다. 패키지 설치, HTML 로드, 크기·품질 설정, PNG 변환, 결과 확인까지 전체 흐름을 단계별로 안내했습니다. 전체 소스 코드를 활용해 배치 작업, 웹 서비스 등 다양한 시나리오에 적용할 수 있습니다. **HTML을 PNG로 변환**, **HTML을 이미지로 렌더링**, **이미지 크기 HTML 설정**, **HTML을 PNG로 저장**이 필요할 때 언제든 활용해 보세요. Happy coding! + +--- + +![HTML 파일 → Aspose.HTML → PNG 출력 흐름도 (HTML에서 PNG 만들기)](placeholder-image.png "HTML에서 PNG 만들기 흐름도") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/polish/net/generate-jpg-and-png-images/_index.md b/html/polish/net/generate-jpg-and-png-images/_index.md index c3973772b..bb89df8d8 100644 --- a/html/polish/net/generate-jpg-and-png-images/_index.md +++ b/html/polish/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Zintegrowanie Aspose.HTML dla .NET z projektami .NET jest bezproblemowe. Bibliot Dowiedz się, jak tworzyć dynamiczne strony internetowe za pomocą Aspose.HTML dla .NET. Ten samouczek krok po kroku obejmuje wymagania wstępne, przestrzenie nazw i renderowanie HTML do obrazów. ### [Generuj obrazy PNG przez ImageDevice w .NET z Aspose.HTML](./generate-png-images-by-imagedevice/) Naucz się używać Aspose.HTML dla .NET do manipulowania dokumentami HTML, konwertowania HTML na obrazy i nie tylko. Samouczek krok po kroku z FAQ. +### [Utwórz PNG z HTML – Pełny przewodnik C# z Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Kompletny przewodnik po tworzeniu plików PNG z kodu HTML w C# przy użyciu Aspose.HTML. ## Wniosek @@ -52,4 +54,4 @@ Więc po co czekać? Zacznij eksplorować świat konwersji HTML na obraz z Aspos {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/polish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/polish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..2b399a227 --- /dev/null +++ b/html/polish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,261 @@ +--- +category: general +date: 2026-01-10 +description: Szybko twórz pliki PNG z HTML przy użyciu Aspose.HTML. Dowiedz się, jak + konwertować HTML na PNG, renderować HTML jako obraz, ustawiać rozmiar obrazu HTML + oraz zapisywać HTML jako PNG w jednym samouczku. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: pl +og_description: Utwórz PNG z HTML za pomocą Aspose.HTML. Ten przewodnik pokazuje, + jak konwertować HTML na PNG, renderować HTML jako obraz, ustawiać rozmiar obrazu + HTML oraz zapisywać HTML jako PNG. +og_title: Utwórz PNG z HTML – Kompletny samouczek C# +tags: +- C# +- Aspose.HTML +- Image Rendering +title: Utwórz PNG z HTML – Pełny przewodnik C# z Aspose.HTML +url: /pl/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Tworzenie PNG z HTML – Kompletny samouczek C# + +Kiedykolwiek potrzebowałeś **create PNG from HTML**, ale nie byłeś pewien, która biblioteka zapewni wyniki pixel‑perfect? Nie jesteś sam. Wielu programistów napotyka problem, gdy próbują przekształcić dynamiczną stronę internetową w statyczny obraz dla raportów, miniatur lub podglądów e‑mail. + +W tym przewodniku przeprowadzimy praktyczne, kompleksowe rozwiązanie, które **converts HTML to PNG**, **renders HTML as image**, pozwala **set image size HTML**, i w końcu **saves HTML as PNG** — wszystko przy użyciu Aspose.HTML for .NET. Po zakończeniu będziesz mieć gotową do uruchomienia aplikację konsolową, która wygeneruje wyraźny plik PNG dokładnie w określonym rozmiarze. + +## Czego będziesz potrzebował + +- **.NET 6.0** lub nowszy (API działa także na .NET Framework, ale .NET 6 to optymalne rozwiązanie). +- **Aspose.HTML for .NET** – możesz pobrać go z NuGet (`Install-Package Aspose.HTML`). +- Prosty plik **input.html**, który chcesz wyrenderować. Działa wszystko, od statycznego szablonu po w pełni stylowaną stronę. +- Visual Studio, Rider lub dowolny edytor, którego preferujesz. + +Brak dodatkowych zależności, bez przeglądarek headless, po prostu czysta biblioteka .NET. + +## Krok 1: Tworzenie PNG z HTML – Konfiguracja projektu + +Najpierw utwórz nowy projekt konsolowy i dodaj pakiet Aspose.HTML. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Po przywróceniu pakietu otwórz `Program.cs`. Później zamienimy domyślną zawartość na pełny przykład, ale na razie po prostu potwierdź, że projekt się kompiluje: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Uruchom `dotnet run`. Jeśli zobaczysz powitanie, wszystko jest gotowe. + +## Krok 2: Konwersja HTML do PNG – Ładowanie dokumentu + +Teraz naprawdę **convert HTML to PNG**. Pierwszą rzeczą, której potrzebujemy, jest obiekt `HTMLDocument`, wskazujący na nasz plik źródłowy. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Dlaczego to ważne:** `HTMLDocument` parsuje znacznik, stosuje CSS i buduje DOM, który Aspose.HTML może później rasteryzować. Pominięcie tego kroku oznacza, że renderer nie ma nic, z czym mógłby pracować. + +## Krok 3: Renderowanie HTML jako obrazu – Definiowanie opcji renderowania obrazu + +Renderowanie to miejsce, w którym **set image size HTML** i dostosowujesz ustawienia jakości, takie jak antyaliasing. Klasa `ImageRenderingOptions` zapewnia precyzyjną kontrolę. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Wskazówka:** Jeśli pominiesz `Width` i `Height`, Aspose.HTML użyje wbudowanego rozmiaru strony, który może być ogromny w nowoczesnych responsywnych projektach. Określenie wymiarów utrzymuje PNG w lekkiej formie. + +## Krok 4: Zapis HTML jako PNG – Wykonanie konwersji + +Gdy dokument i opcje są gotowe, wywołujemy `ImageConverter`. Ten krok **saves HTML as PNG** w wybranej lokalizacji. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +Blok `using` zapewnia, że konwerter zwalnia wszelkie zasoby natywne, co jest szczególnie ważne w długotrwałych usługach. + +## Krok 5: Weryfikacja wyniku – Szybka kontrola + +Po zakończeniu konwersji warto sprawdzić, czy plik istnieje i ma oczekiwane wymiary. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Otwórz `output.png` w dowolnym przeglądarce obrazów. Powinieneś zobaczyć oryginalny HTML wyrenderowany w rozdzielczości 1024 × 768 pikseli, z wyraźnym tekstem i gładkimi krawędziami. + +## Pełny działający przykład + +Łącząc wszystko razem, otrzymujesz pojedynczy, samodzielny program: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Zapisz to jako `Program.cs`, zamień `YOUR_DIRECTORY` na rzeczywistą ścieżkę folderu i uruchom `dotnet run`. Konsola przeprowadzi Cię przez każdy etap i potwierdzi utworzenie pliku PNG. + +## Częste pytania i przypadki brzegowe + +### „Co jeśli mój HTML używa zewnętrznego CSS lub obrazów?” + +Aspose.HTML automatycznie rozwiązuje względne adresy URL na podstawie katalogu pliku źródłowego. Upewnij się, że wszystkie zasoby są dostępne z tego samego folderu lub podaj bezwzględny URL. + +### „Czy mogę wyrenderować konkretny element zamiast całej strony?” + +Tak. Załaduj dokument, znajdź element przy pomocy `htmlDocument.QuerySelector` i przekaż ten węzeł do `ImageConverter`. Przeciążenie API `Convert(IHTMLElement, string, ImageRenderingOptions)` rozwiązuje problem. + +### „Jak zmienić kolor tła PNG?” + +Ustaw `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (lub dowolny `System.Drawing.Color`, który lubisz) przed wywołaniem `Convert`. + +### „Czy istnieje możliwość uzyskania JPEG zamiast PNG?” + +Zamień rozszerzenie pliku wyjściowego na `.jpg` i opcjonalnie ustaw `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. Konwerter zastosuje żądany format. + +## Wskazówki dotyczące wydajności + +- **Reuse the `ImageConverter`** jeśli przetwarzasz wiele plików HTML w partii; utworzenie go raz zmniejsza narzut natywny. +- **Limit the viewport size** (`Width`/`Height`) do najmniejszych wymiarów, które naprawdę potrzebujesz — to znacznie redukuje zużycie pamięci. +- **Turn off unnecessary features** takich jak `UseAntialiasing` dla prostych rysunków liniowych; przyspiesza renderowanie bez zauważalnej utraty jakości. + +## Kolejne kroki + +Teraz, gdy wiesz, jak **create PNG from HTML**, rozważ rozszerzenie przepływu pracy: + +- **Batch processing** – iteruj po katalogu plików HTML i generuj miniatury dla każdego. +- **Dynamic HTML generation** – połącz szablony Razor lub StringBuilder z Aspose.HTML, aby na bieżąco tworzyć obrazy (np. wykresy, certyfikaty lub faktury). +- **Integration with web APIs** – udostępnij endpoint, który przyjmuje surowy HTML i zwraca strumień PNG, idealny dla usług SaaS. + +Każda z tych koncepcji opiera się na tych samych podstawowych elementach, które omówiliśmy: ładowaniu `HTMLDocument`, konfigurowaniu `ImageRenderingOptions` i wywoływaniu `ImageConverter`. + +--- + +### TL;DR + +Pokazaliśmy prosty, gotowy do produkcji sposób na **create PNG from HTML** przy użyciu Aspose.HTML for .NET. Samouczek prowadzi Cię przez instalację pakietu, ładowanie HTML, ustawianie rozmiaru i jakości, konwersję do PNG oraz weryfikację wyniku. Mając pełny kod źródłowy, możesz dostosować wzorzec do zadań wsadowych, usług internetowych lub dowolnego scenariusza, w którym potrzebujesz **convert HTML to PNG**, **render HTML as image**, **set image size HTML** i **save HTML as PNG**. Szczęśliwego kodowania! + +--- + +![Diagram showing the flow from HTML file → Aspose.HTML → PNG output (create png from html)](placeholder-image.png "Create PNG from HTML flow diagram") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/portuguese/net/generate-jpg-and-png-images/_index.md b/html/portuguese/net/generate-jpg-and-png-images/_index.md index e8dc5007b..9de7a5a30 100644 --- a/html/portuguese/net/generate-jpg-and-png-images/_index.md +++ b/html/portuguese/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Integrar o Aspose.HTML para .NET em seus projetos .NET é descomplicado. A bibli Aprenda a criar páginas web dinâmicas usando Aspose.HTML para .NET. Este tutorial passo a passo abrange pré-requisitos, namespaces e renderização de HTML para imagens. ### [Gerar imagens PNG por ImageDevice em .NET com Aspose.HTML](./generate-png-images-by-imagedevice/) Aprenda a usar Aspose.HTML para .NET para manipular documentos HTML, converter HTML em imagens e muito mais. Tutorial passo a passo com FAQs. +### [Criar PNG a partir de HTML – Guia completo em C# com Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Aprenda a converter HTML em PNG usando C# e Aspose.HTML com este guia completo passo a passo. ## Conclusão @@ -52,4 +54,4 @@ Então, por que esperar? Comece a explorar o mundo da conversão de HTML para im {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/portuguese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/portuguese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..fc24a19c7 --- /dev/null +++ b/html/portuguese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,261 @@ +--- +category: general +date: 2026-01-10 +description: Crie PNG a partir de HTML rapidamente usando Aspose.HTML. Aprenda como + converter HTML para PNG, renderizar HTML como imagem, definir o tamanho da imagem + HTML e salvar HTML como PNG em um único tutorial. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: pt +og_description: Crie PNG a partir de HTML com Aspose.HTML. Este guia mostra como converter + HTML para PNG, renderizar HTML como imagem, definir o tamanho da imagem HTML e salvar + HTML como PNG. +og_title: Criar PNG a partir de HTML – Tutorial completo de C# +tags: +- C# +- Aspose.HTML +- Image Rendering +title: Criar PNG a partir de HTML – Guia completo em C# com Aspose.HTML +url: /pt/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Criar PNG a partir de HTML – Tutorial Completo em C# + +Já precisou **criar PNG a partir de HTML** mas não tinha certeza de qual biblioteca forneceria resultados pixel‑perfeitos? Você não está sozinho. Muitos desenvolvedores encontram um obstáculo ao tentar transformar uma página web dinâmica em uma imagem estática para relatórios, miniaturas ou pré‑visualizações de e‑mail. + +Neste guia, percorreremos uma solução prática, de ponta a ponta, que **converte HTML para PNG**, **renderiza HTML como imagem**, permite **definir o tamanho da imagem HTML**, e finalmente **salva HTML como PNG** — tudo com Aspose.HTML para .NET. Ao final, você terá um aplicativo console pronto para executar que gera um arquivo PNG nítido exatamente no tamanho que você especificar. + +## O que você precisará + +- **.NET 6.0** ou posterior (a API funciona também no .NET Framework, mas o .NET 6 é o ponto ideal). +- **Aspose.HTML for .NET** – você pode obtê-lo no NuGet (`Install-Package Aspose.HTML`). +- Um simples arquivo **input.html** que você deseja renderizar. Qualquer coisa, desde um modelo estático até uma página totalmente estilizada, funciona. +- Visual Studio, Rider ou qualquer editor de sua preferência. + +Sem dependências extras, sem navegadores headless, apenas uma biblioteca .NET limpa. + +## Etapa 1: Criar PNG a partir de HTML – Configuração do Projeto + +Primeiro, crie um novo projeto console e adicione o pacote Aspose.HTML. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Depois que o pacote for restaurado, abra `Program.cs`. Substituiremos o conteúdo padrão pelo exemplo completo mais adiante, mas por enquanto apenas confirme que o projeto compila: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Execute `dotnet run`. Se você vir a saudação, está pronto para prosseguir. + +## Etapa 2: Converter HTML para PNG – Carregar o Documento + +Agora realmente **convertimos HTML para PNG**. A primeira coisa que precisamos é de um objeto `HTMLDocument` que aponte para o nosso arquivo fonte. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Por que isso importa:** `HTMLDocument` analisa a marcação, aplica CSS e constrói um DOM que o Aspose.HTML pode rasterizar posteriormente. Pular esta etapa significa que o renderizador não tem nada com o que trabalhar. + +## Etapa 3: Renderizar HTML como Imagem – Definir Opções de Renderização de Imagem + +A renderização é onde você **define o tamanho da imagem HTML** e ajusta configurações de qualidade como antialiasing. A classe `ImageRenderingOptions` oferece controle granular. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Dica profissional:** Se você omitir `Width` e `Height`, o Aspose.HTML usará o tamanho intrínseco da página, que pode ser enorme para designs responsivos modernos. Especificar as dimensões mantém o PNG leve. + +## Etapa 4: Salvar HTML como PNG – Executar a Conversão + +Com o documento e as opções prontos, chamamos `ImageConverter`. Esta etapa **salva HTML como PNG** no local que você escolher. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +O bloco `using` garante que o conversor libere quaisquer recursos nativos, o que é especialmente importante em serviços de longa duração. + +## Etapa 5: Verificar o Resultado – Verificação Rápida + +Depois que a conversão terminar, é uma boa ideia confirmar que o arquivo existe e tem as dimensões esperadas. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Abra `output.png` em qualquer visualizador de imagens. Você deverá ver seu HTML original renderizado em 1024 × 768 pixels, com texto nítido e bordas suaves. + +## Exemplo Completo Funcional + +Juntando tudo, você obtém um único programa autônomo: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Salve isso como `Program.cs`, substitua `YOUR_DIRECTORY` pelo caminho real da pasta e execute `dotnet run`. O console guiará você por cada etapa e confirmará a criação do arquivo PNG. + +## Perguntas Frequentes & Casos Limite + +### “E se meu HTML usar CSS ou imagens externas?” + +O Aspose.HTML resolve automaticamente URLs relativas com base no diretório do arquivo fonte. Basta garantir que todos os recursos estejam acessíveis a partir da mesma pasta ou fornecer uma URL absoluta. + +### “Posso renderizar um elemento específico em vez da página inteira?” + +Sim. Carregue o documento, localize o elemento com `htmlDocument.QuerySelector` e passe esse nó para `ImageConverter`. A sobrecarga da API `Convert(IHTMLElement, string, ImageRenderingOptions)` faz o trabalho. + +### “Como altero a cor de fundo do PNG?” + +Defina `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (ou qualquer `System.Drawing.Color` que desejar) antes de chamar `Convert`. + +### “Existe uma forma de obter JPEG em vez de PNG?” + +Altere a extensão do arquivo de saída para `.jpg` e, opcionalmente, defina `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. O conversor respeitará o formato solicitado. + +## Dicas de Performance + +- **Reutilize o `ImageConverter`** se você estiver processando muitos arquivos HTML em lote; criá‑lo uma única vez reduz a sobrecarga nativa. +- **Limite o tamanho da viewport** (`Width`/`Height`) às menores dimensões que realmente precisa — isso reduz drasticamente o uso de memória. +- **Desative recursos desnecessários** como `UseAntialiasing` para arte de linhas simples; isso acelera a renderização sem perda de qualidade perceptível. + +## Próximos Passos + +Agora que você sabe como **criar PNG a partir de HTML**, considere expandir o fluxo de trabalho: + +- **Processamento em lote** – percorrer um diretório de arquivos HTML e gerar miniaturas para cada um. +- **Geração dinâmica de HTML** – combinar templates Razor ou StringBuilder com Aspose.HTML para produzir imagens sob demanda (pense em gráficos, certificados ou faturas). +- **Integração com APIs web** – expor um endpoint que aceita HTML bruto e retorna um fluxo PNG, perfeito para serviços SaaS. + +Cada uma dessas ideias se baseia nos mesmos conceitos principais que abordamos: carregar um `HTMLDocument`, configurar `ImageRenderingOptions` e chamar `ImageConverter`. + +--- + +### TL;DR + +Mostramos uma maneira direta e pronta para produção de **criar PNG a partir de HTML** usando Aspose.HTML para .NET. O tutorial orienta você na instalação do pacote, carregamento do HTML, definição de tamanho e qualidade, conversão para PNG e verificação do resultado. Com o código-fonte completo em mãos, você pode adaptar o padrão para trabalhos em lote, serviços web ou qualquer cenário onde precise **converter HTML para PNG**, **renderizar HTML como imagem**, **definir o tamanho da imagem HTML** e **salvar HTML como PNG**. Boa codificação! + +--- + +![Diagram showing the flow from HTML file → Aspose.HTML → PNG output (create png from html)](placeholder-image.png "Create PNG from HTML flow diagram") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/russian/net/generate-jpg-and-png-images/_index.md b/html/russian/net/generate-jpg-and-png-images/_index.md index c461eccbe..fe032eccd 100644 --- a/html/russian/net/generate-jpg-and-png-images/_index.md +++ b/html/russian/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Aspose.HTML для .NET предлагает простой метод прео Узнайте, как создавать динамические веб-страницы с помощью Aspose.HTML для .NET. Это пошаговое руководство охватывает предварительные условия, пространства имен и рендеринг HTML в изображения. ### [Генерация изображений PNG с помощью ImageDevice в .NET с Aspose.HTML](./generate-png-images-by-imagedevice/) Изучите Aspose.HTML для .NET для работы с HTML-документами, преобразования HTML в изображения и т. д. Пошаговое руководство с часто задаваемыми вопросами. +### [Создание PNG из HTML – Полное руководство C# с Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Полное руководство по созданию PNG из HTML с использованием C# и Aspose.HTML, включая примеры кода и настройки. ## Заключение @@ -52,4 +54,4 @@ Aspose.HTML для .NET предлагает простой метод прео {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/russian/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/russian/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..7440fa1d4 --- /dev/null +++ b/html/russian/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,259 @@ +--- +category: general +date: 2026-01-10 +description: Быстро создавайте PNG из HTML с помощью Aspose.HTML. Узнайте, как конвертировать + HTML в PNG, отобразить HTML как изображение, задать размер изображения HTML и сохранить + HTML как PNG в одном руководстве. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: ru +og_description: Создайте PNG из HTML с помощью Aspose.HTML. Это руководство показывает, + как преобразовать HTML в PNG, отобразить HTML как изображение, задать размер изображения + HTML и сохранить HTML в PNG. +og_title: Создать PNG из HTML — Полный учебник C# +tags: +- C# +- Aspose.HTML +- Image Rendering +title: Создание PNG из HTML – Полное руководство по C# с Aspose.HTML +url: /ru/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Создание PNG из HTML – Полный C#‑урок + +Когда‑то вам нужно **создать PNG из HTML**, но вы не знали, какая библиотека даст пиксель‑точный результат? Вы не одиноки. Многие разработчики сталкиваются с проблемой, пытаясь превратить динамическую веб‑страницу в статичное изображение для отчётов, миниатюр или превью в письмах. + +В этом руководстве мы пошагово рассмотрим практическое решение, которое **конвертирует HTML в PNG**, **рендерит HTML как изображение**, позволяет **задать размер изображения HTML**, и в конце **сохраняет HTML как PNG** — всё с помощью Aspose.HTML for .NET. К концу вы получите готовое консольное приложение, которое выдаст чёткий PNG‑файл точно того размера, который вы укажете. + +## Что понадобится + +Прежде чем погрузиться в код, убедитесь, что у вас есть следующее: + +- **.NET 6.0** или новее (API также работает на .NET Framework, но .NET 6 – оптимальный вариант). +- **Aspose.HTML for .NET** — его можно установить через NuGet (`Install-Package Aspose.HTML`). +- Простой файл **input.html**, который вы хотите отрендерить. Подойдёт любой: от статического шаблона до полностью стилизованной страницы. +- Visual Studio, Rider или любой другой редактор по вашему выбору. + +Никаких дополнительных зависимостей, без безголовых браузеров, только чистая .NET‑библиотека. + +## Шаг 1: Создание PNG из HTML — Настройка проекта + +Сначала создайте новый консольный проект и подключите пакет Aspose.HTML. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +После восстановления пакета откройте `Program.cs`. Мы позже заменим содержимое на полный пример, а пока просто убедитесь, что проект собирается: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Запустите `dotnet run`. Если вы увидели приветствие, всё готово. + +## Шаг 2: Конвертация HTML в PNG — Загрузка документа + +Теперь мы действительно **конвертируем HTML в PNG**. Первым делом нам нужен объект `HTMLDocument`, указывающий на наш исходный файл. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Почему это важно:** `HTMLDocument` разбирает разметку, применяет CSS и строит DOM, который Aspose.HTML затем растеризует. Пропуск этого шага оставит рендерер без данных. + +## Шаг 3: Рендеринг HTML как изображения — Определение параметров рендеринга + +Рендеринг — это место, где вы **задаёте размер изображения HTML** и настраиваете параметры качества, такие как сглаживание. Класс `ImageRenderingOptions` предоставляет тонкую настройку. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Полезный совет:** Если не указать `Width` и `Height`, Aspose.HTML использует внутренний размер страницы, который может быть огромным для современных адаптивных дизайнов. Задание размеров делает PNG более лёгким. + +## Шаг 4: Сохранение HTML как PNG — Выполнение конвертации + +Когда документ и параметры готовы, вызываем `ImageConverter`. Этот шаг **сохраняет HTML как PNG** в указанное место. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +Блок `using` гарантирует, что конвертер освободит все нативные ресурсы, что особенно важно в длительно работающих сервисах. + +## Шаг 5: Проверка результата — Быстрый контроль + +После завершения конвертации рекомендуется убедиться, что файл существует и имеет ожидаемые размеры. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Откройте `output.png` в любом просмотрщике изображений. Вы должны увидеть ваш оригинальный HTML, отрендеренный в 1024 × 768 пикселей, с чётким текстом и плавными краями. + +## Полный рабочий пример + +Объединив всё вместе, получаем единый, самодостаточный код: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Сохраните его как `Program.cs`, замените `YOUR_DIRECTORY` на реальный путь к папке и запустите `dotnet run`. Консоль проведёт вас через каждый этап и подтвердит создание PNG‑файла. + +## Часто задаваемые вопросы и особые случаи + +### «Что если мой HTML использует внешние CSS или изображения?» +Aspose.HTML автоматически разрешает относительные URL‑ы, основываясь на каталоге исходного файла. Просто убедитесь, что все ресурсы доступны из той же папки или укажите абсолютный URL. + +### «Можно ли отрендерить конкретный элемент, а не всю страницу?» +Да. Загрузите документ, найдите элемент с помощью `htmlDocument.QuerySelector` и передайте этот узел в `ImageConverter`. Перегрузка `Convert(IHTMLElement, string, ImageRenderingOptions)` решает задачу. + +### «Как изменить цвет фона PNG?» +Установите `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (или любой другой `System.Drawing.Color`) перед вызовом `Convert`. + +### «Можно ли получить JPEG вместо PNG?» +Смените расширение выходного файла на `.jpg` и, при желании, задайте `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. Конвертер учтёт запрошенный формат. + +## Советы по производительности + +- **Переиспользуйте `ImageConverter`**, если обрабатываете множество HTML‑файлов пакетно; создание одного экземпляра снижает накладные расходы нативного кода. +- **Ограничьте размер области просмотра** (`Width`/`Height`) до минимально необходимых размеров — это существенно уменьшит потребление памяти. +- **Отключайте ненужные функции**, такие как `UseAntialiasing`, для простых линейных рисунков; это ускорит рендеринг без заметной потери качества. + +## Следующие шаги + +Теперь, когда вы умеете **создавать PNG из HTML**, можно расширить процесс: + +- **Пакетная обработка** — цикл по каталогу HTML‑файлов и генерация миниатюр для каждого. +- **Динамическое создание HTML** — комбинация Razor‑шаблонов или `StringBuilder` с Aspose.HTML для генерации изображений «на лету» (графики, сертификаты, счета). +- **Интеграция с веб‑API** — создание эндпоинта, принимающего сырой HTML и возвращающего поток PNG, идеально подходящего для SaaS‑сервисов. + +Все эти идеи опираются на те же базовые концепции, которые мы рассмотрели: загрузка `HTMLDocument`, настройка `ImageRenderingOptions` и вызов `ImageConverter`. + +--- + +### TL;DR + +Мы показали простой, готовый к продакшну способ **создать PNG из HTML** с помощью Aspose.HTML for .NET. Руководство проводит вас через установку пакета, загрузку HTML, настройку размеров и качества, конвертацию в PNG и проверку результата. Имея полный исходный код, вы сможете адаптировать шаблон под пакетные задания, веб‑сервисы или любые сценарии, где требуется **конвертировать HTML в PNG**, **рендерить HTML как изображение**, **задать размер изображения HTML** и **сохранить HTML как PNG**. Приятного кодинга! + +--- + +![Диаграмма, показывающая поток от HTML‑файла → Aspose.HTML → PNG‑вывода (create png from html)](placeholder-image.png "Диаграмма потока создания PNG из HTML") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/spanish/net/generate-jpg-and-png-images/_index.md b/html/spanish/net/generate-jpg-and-png-images/_index.md index 3e9bc88d0..339a0390e 100644 --- a/html/spanish/net/generate-jpg-and-png-images/_index.md +++ b/html/spanish/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Integrar Aspose.HTML para .NET en sus proyectos .NET es muy sencillo. La bibliot Aprenda a crear páginas web dinámicas con Aspose.HTML para .NET. Este tutorial paso a paso cubre los requisitos previos, los espacios de nombres y la representación de HTML en imágenes. ### [Generar imágenes PNG mediante ImageDevice en .NET con Aspose.HTML](./generate-png-images-by-imagedevice/) Aprenda a utilizar Aspose.HTML para .NET para manipular documentos HTML, convertir HTML en imágenes y más. Tutorial paso a paso con preguntas frecuentes. +### [Crear PNG a partir de HTML – Guía completa en C# con Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Aprenda a generar archivos PNG desde HTML usando Aspose.HTML en C#. Guía paso a paso con ejemplos completos. ## Conclusión @@ -52,4 +54,4 @@ Entonces, ¿por qué esperar? Comience hoy mismo a explorar el mundo de la conve {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/spanish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/spanish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..d5d099c14 --- /dev/null +++ b/html/spanish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,259 @@ +--- +category: general +date: 2026-01-10 +description: Crea PNG a partir de HTML rápidamente usando Aspose.HTML. Aprende cómo + convertir HTML a PNG, renderizar HTML como imagen, establecer el tamaño de la imagen + HTML y guardar HTML como PNG en un solo tutorial. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: es +og_description: Crear PNG a partir de HTML con Aspose.HTML. Esta guía muestra cómo + convertir HTML a PNG, renderizar HTML como imagen, establecer el tamaño de la imagen + HTML y guardar HTML como PNG. +og_title: Crear PNG a partir de HTML – Tutorial completo de C# +tags: +- C# +- Aspose.HTML +- Image Rendering +title: Crear PNG a partir de HTML – Guía completa de C# con Aspose.HTML +url: /es/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Crear PNG a partir de HTML – Tutorial completo en C# + +¿Alguna vez necesitaste **crear PNG a partir de HTML** pero no estabas seguro de qué biblioteca te daría resultados píxel‑perfectos? No estás solo. Muchos desarrolladores se topan con un obstáculo cuando intentan convertir una página web dinámica en una imagen estática para informes, miniaturas o vistas previas de correo electrónico. + +En esta guía recorreremos una solución práctica, de extremo a extremo, que **convierte HTML a PNG**, **renderiza HTML como imagen**, te permite **establecer el tamaño de la imagen HTML**, y finalmente **guarda HTML como PNG** — todo con Aspose.HTML para .NET. Al final tendrás una aplicación de consola lista para ejecutar que genera un archivo PNG nítido con el tamaño exacto que especifiques. + +## Lo que necesitarás + +Antes de sumergirnos en el código, asegúrate de contar con lo siguiente: + +- **.NET 6.0** o posterior (la API también funciona en .NET Framework, pero .NET 6 es el punto óptimo). +- **Aspose.HTML for .NET** – puedes obtenerlo desde NuGet (`Install-Package Aspose.HTML`). +- Un archivo **input.html** simple que quieras renderizar. Cualquier cosa, desde una plantilla estática hasta una página completamente estilizada, funciona. +- Visual Studio, Rider o cualquier editor que prefieras. + +Sin dependencias extra, sin navegadores sin cabeza, solo una biblioteca .NET limpia. + +## Paso 1: Crear PNG a partir de HTML – Configuración del proyecto + +Primero, crea un nuevo proyecto de consola y agrega el paquete Aspose.HTML. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Una vez restaurado el paquete, abre `Program.cs`. Más adelante reemplazaremos el contenido predeterminado con el ejemplo completo, pero por ahora solo verifica que el proyecto compile: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Ejecuta `dotnet run`. Si ves el saludo, todo está listo. + +## Paso 2: Convertir HTML a PNG – Cargar el documento + +Ahora realmente **convertimos HTML a PNG**. Lo primero que necesitamos es un objeto `HTMLDocument` que apunte a nuestro archivo fuente. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Por qué es importante:** `HTMLDocument` analiza el marcado, aplica el CSS y construye un DOM que Aspose.HTML podrá rasterizar después. Omitir este paso deja al renderizador sin nada con lo que trabajar. + +## Paso 3: Renderizar HTML como imagen – Definir opciones de renderizado + +El renderizado es donde **estableces el tamaño de la imagen HTML** y ajustas configuraciones de calidad como el antialiasing. La clase `ImageRenderingOptions` te brinda un control fino. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Consejo profesional:** Si omites `Width` y `Height`, Aspose.HTML usará el tamaño intrínseco de la página, lo que puede ser enorme para diseños responsivos modernos. Especificar dimensiones mantiene el PNG liviano. + +## Paso 4: Guardar HTML como PNG – Realizar la conversión + +Con el documento y las opciones listos, llamamos a `ImageConverter`. Este paso **guarda HTML como PNG** en la ubicación que elijas. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +El bloque `using` asegura que el convertidor libere cualquier recurso nativo, lo cual es especialmente importante en servicios de larga ejecución. + +## Paso 5: Verificar el resultado – Chequeo rápido + +Después de que la conversión finalice, es buena idea confirmar que el archivo exista y tenga las dimensiones esperadas. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Abre `output.png` en cualquier visor de imágenes. Deberías ver tu HTML original renderizado a 1024 × 768 píxeles, con texto nítido y bordes suaves. + +## Ejemplo completo y funcional + +Uniendo todo, obtienes un programa único y autocontenido: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Guárdalo como `Program.cs`, reemplaza `YOUR_DIRECTORY` con la ruta real de la carpeta y ejecuta `dotnet run`. La consola te guiará por cada etapa y confirmará la creación del archivo PNG. + +## Preguntas frecuentes y casos especiales + +### “¿Qué pasa si mi HTML usa CSS o imágenes externas?” +Aspose.HTML resuelve automáticamente las URL relativas basándose en el directorio del archivo fuente. Solo asegúrate de que todos los recursos sean accesibles desde la misma carpeta o proporciona una URL absoluta. + +### “¿Puedo renderizar un elemento específico en lugar de toda la página?” +Sí. Carga el documento, localiza el elemento con `htmlDocument.QuerySelector` y pasa ese nodo a `ImageConverter`. La sobrecarga `Convert(IHTMLElement, string, ImageRenderingOptions)` hace el trabajo. + +### “¿Cómo cambio el color de fondo del PNG?” +Establece `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (o cualquier `System.Drawing.Color` que prefieras) antes de llamar a `Convert`. + +### “¿Existe una forma de obtener un JPEG en lugar de PNG?” +Cambia la extensión del archivo de salida a `.jpg` y, opcionalmente, establece `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. El convertidor respetará el formato solicitado. + +## Consejos de rendimiento + +- **Reutiliza el `ImageConverter`** si vas a procesar muchos archivos HTML en lote; crear una sola instancia reduce la sobrecarga nativa. +- **Limita el tamaño del viewport** (`Width`/`Height`) a las dimensiones mínimas que realmente necesites; esto reduce drásticamente el uso de memoria. +- **Desactiva características innecesarias** como `UseAntialiasing` para arte lineal simple; acelera el renderizado sin pérdida perceptible de calidad. + +## Próximos pasos + +Ahora que sabes cómo **crear PNG a partir de HTML**, considera ampliar el flujo de trabajo: + +- **Procesamiento por lotes** – recorre un directorio de archivos HTML y genera miniaturas para cada uno. +- **Generación dinámica de HTML** – combina plantillas Razor o `StringBuilder` con Aspose.HTML para producir imágenes al vuelo (p. ej., gráficos, certificados o facturas). +- **Integración con APIs web** – expón un endpoint que acepte HTML sin procesar y devuelva un flujo PNG, ideal para servicios SaaS. + +Todas estas ideas se basan en los mismos conceptos centrales que cubrimos: cargar un `HTMLDocument`, configurar `ImageRenderingOptions` y llamar a `ImageConverter`. + +--- + +### TL;DR + +Hemos mostrado una manera directa y lista para producción de **crear PNG a partir de HTML** usando Aspose.HTML para .NET. El tutorial te guía por la instalación del paquete, la carga del HTML, la configuración del tamaño y la calidad, la conversión a PNG y la verificación del resultado. Con el código fuente completo a mano, puedes adaptar el patrón a trabajos por lotes, servicios web o cualquier escenario donde necesites **convertir HTML a PNG**, **renderizar HTML como imagen**, **establecer el tamaño de la imagen HTML** y **guardar HTML como PNG**. ¡Feliz codificación! + +--- + +![Diagrama que muestra el flujo desde archivo HTML → Aspose.HTML → salida PNG (create png from html)](placeholder-image.png "Diagrama del flujo de crear PNG a partir de HTML") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/swedish/net/generate-jpg-and-png-images/_index.md b/html/swedish/net/generate-jpg-and-png-images/_index.md index 8ebd30be1..fca30043e 100644 --- a/html/swedish/net/generate-jpg-and-png-images/_index.md +++ b/html/swedish/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Att integrera Aspose.HTML för .NET i dina .NET-projekt är problemfritt. Biblio Lär dig hur du skapar dynamiska webbsidor med Aspose.HTML för .NET. Denna steg-för-steg handledning täcker förutsättningar, namnutrymmen och återgivning av HTML till bilder. ### [Generera PNG-bilder av ImageDevice i .NET med Aspose.HTML](./generate-png-images-by-imagedevice/) Lär dig att använda Aspose.HTML för .NET för att manipulera HTML-dokument, konvertera HTML till bilder och mer. Steg-för-steg handledning med vanliga frågor. +### [Skapa PNG från HTML – Fullständig C#-guide med Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Lär dig hur du konverterar HTML till PNG med en komplett C#-guide och Aspose.HTML. ## Slutsats @@ -52,4 +54,4 @@ Så varför vänta? Börja utforska världen av HTML till bildkonvertering med A {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/swedish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/swedish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..76f24829a --- /dev/null +++ b/html/swedish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,261 @@ +--- +category: general +date: 2026-01-10 +description: Skapa PNG från HTML snabbt med Aspose.HTML. Lär dig hur du konverterar + HTML till PNG, renderar HTML som bild, anger bildstorlek för HTML och sparar HTML + som PNG i en enda handledning. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: sv +og_description: Skapa PNG från HTML med Aspose.HTML. Den här guiden visar hur du konverterar + HTML till PNG, renderar HTML som bild, ställer in bildstorlek för HTML och sparar + HTML som PNG. +og_title: Skapa PNG från HTML – Komplett C#‑handledning +tags: +- C# +- Aspose.HTML +- Image Rendering +title: Skapa PNG från HTML – Fullständig C#‑guide med Aspose.HTML +url: /sv/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Skapa PNG från HTML – Komplett C#-handledning + +Har du någonsin behövt **create PNG from HTML** men varit osäker på vilket bibliotek som ger dig pixelperfekta resultat? Du är inte ensam. Många utvecklare stöter på problem när de försöker omvandla en dynamisk webbsida till en statisk bild för rapporter, miniatyrer eller e‑postförhandsgranskningar. + +I den här guiden går vi igenom en praktisk, end‑to‑end‑lösning som **converts HTML to PNG**, **renders HTML as image**, låter dig **set image size HTML**, och slutligen **saves HTML as PNG**—allt med Aspose.HTML för .NET. När du är klar har du en färdig körbar konsolapp som genererar en skarp PNG‑fil exakt i den storlek du anger. + +## Vad du behöver + +- **.NET 6.0** eller senare (API:et fungerar även på .NET Framework, men .NET 6 är den optimala versionen). +- **Aspose.HTML for .NET** – du kan hämta det från NuGet (`Install-Package Aspose.HTML`). +- En enkel **input.html**‑fil som du vill rendera. Allt från en statisk mall till en fullt stylad sida fungerar. +- Visual Studio, Rider eller någon annan editor du föredrar. + +Inga extra beroenden, inga headless‑webbläsare, bara ett rent .NET‑bibliotek. + +## Steg 1: Skapa PNG från HTML – Projektinställning + +Börja med att skapa ett nytt konsolprojekt och hämta Aspose.HTML‑paketet. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +När paketet har återställts, öppna `Program.cs`. Vi kommer att ersätta standardinnehållet med hela exemplet senare, men för nu bara bekräfta att projektet bygger: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Kör `dotnet run`. Om du ser hälsningsmeddelandet, är du redo att gå vidare. + +## Steg 2: Konvertera HTML till PNG – Ladda dokumentet + +Nu konverterar vi faktiskt **convert HTML to PNG**. Det första vi behöver är ett `HTMLDocument`‑objekt som pekar på vår källfil. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Varför detta är viktigt:** `HTMLDocument` parsar markupen, tillämpar CSS och bygger ett DOM som Aspose.HTML senare kan rasterisera. Att hoppa över detta steg innebär att renderaren saknar något att arbeta med. + +## Steg 3: Rendera HTML som bild – Definiera bildrenderingsalternativ + +Rendering är där du **set image size HTML** och justerar kvalitetsinställningar som antialiasing. Klassen `ImageRenderingOptions` ger dig fin‑granulär kontroll. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Proffstips:** Om du utelämnar `Width` och `Height` kommer Aspose.HTML att använda sidans inneboende storlek, vilket kan bli enormt för moderna responsiva designer. Att specificera dimensioner håller PNG‑filen lättviktig. + +## Steg 4: Spara HTML som PNG – Utför konverteringen + +När dokumentet och alternativen är klara, anropar vi `ImageConverter`. Detta steg **saves HTML as PNG** till den plats du väljer. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +`using`‑blocket säkerställer att konvertern frigör eventuella inhemska resurser, vilket är särskilt viktigt i långlivade tjänster. + +## Steg 5: Verifiera resultatet – Snabb kontroll + +När konverteringen är klar är det en bra idé att bekräfta att filen finns och har de förväntade dimensionerna. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Öppna `output.png` i någon bildvisare. Du bör se din ursprungliga HTML renderad i 1024 × 768 pixlar, med skarp text och mjuka kanter. + +## Fullständigt fungerande exempel + +När du sätter ihop allt får du ett enda, självständigt program: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Spara detta som `Program.cs`, ersätt `YOUR_DIRECTORY` med den faktiska mappvägen, och kör `dotnet run`. Konsolen guidar dig genom varje steg och bekräftar att PNG‑filen har skapats. + +## Vanliga frågor & kantfall + +### ”Vad händer om min HTML använder extern CSS eller bilder?” + +Aspose.HTML löser automatiskt relativa URL:er baserat på katalogen för källfilen. Se bara till att alla resurser är åtkomliga från samma mapp eller ange en absolut URL. + +### ”Kan jag rendera ett specifikt element istället för hela sidan?” + +Ja. Ladda dokumentet, lokalisera elementet med `htmlDocument.QuerySelector`, och skicka den noden till `ImageConverter`. API‑överladdningen `Convert(IHTMLElement, string, ImageRenderingOptions)` gör jobbet. + +### ”Hur ändrar jag bakgrundsfärgen på PNG‑filen?” + +Ställ in `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (eller någon annan `System.Drawing.Color` du föredrar) innan du anropar `Convert`. + +### ”Finns det ett sätt att få en JPEG istället för PNG?” + +Byt filändelsen till `.jpg` och sätt eventuellt `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. Konvertern kommer att följa det begärda formatet. + +## Prestandatips + +- **Återanvänd `ImageConverter`** om du bearbetar många HTML‑filer i ett batch‑jobb; att skapa den en gång minskar inhemsk overhead. +- **Begränsa viewport‑storleken** (`Width`/`Height`) till de minsta dimensionerna du faktiskt behöver—det minskar minnesanvändningen dramatiskt. +- **Stäng av onödiga funktioner** som `UseAntialiasing` för enkel linjekonst; det snabbar upp rendering utan märkbar kvalitetsförlust. + +## Nästa steg + +Nu när du vet hur man **create PNG from HTML**, överväg att utöka arbetsflödet: + +- **Batch‑bearbetning** – loopa igenom en katalog med HTML‑filer och generera miniatyrer för var och en. +- **Dynamisk HTML‑generering** – kombinera Razor‑mallar eller StringBuilder med Aspose.HTML för att producera bilder i farten (tänk diagram, certifikat eller fakturor). +- **Integration med web‑API:er** – exponera en endpoint som accepterar rå HTML och returnerar en PNG‑ström, perfekt för SaaS‑tjänster. + +Var och en av dessa idéer bygger på samma grundkoncept vi gick igenom: att ladda ett `HTMLDocument`, konfigurera `ImageRenderingOptions` och anropa `ImageConverter`. + +--- + +### TL;DR + +Vi har visat ett enkelt, produktionsklart sätt att **create PNG from HTML** med Aspose.HTML för .NET. Handledningen guidar dig genom att installera paketet, ladda HTML, ställa in storlek och kvalitet, konvertera till PNG och verifiera resultatet. Med hela källkoden till hands kan du anpassa mönstret för batch‑jobb, webbtjänster eller vilket scenario som helst där du behöver **convert HTML to PNG**, **render HTML as image**, **set image size HTML**, och **save HTML as PNG**. Lycka till med kodningen! + +--- + +![Diagram som visar flödet från HTML‑fil → Aspose.HTML → PNG‑utdata (create png from html)](placeholder-image.png "Flödesdiagram för skapa PNG från HTML") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/thai/net/generate-jpg-and-png-images/_index.md b/html/thai/net/generate-jpg-and-png-images/_index.md index 8cebaf39a..d581a5481 100644 --- a/html/thai/net/generate-jpg-and-png-images/_index.md +++ b/html/thai/net/generate-jpg-and-png-images/_index.md @@ -18,7 +18,7 @@ Aspose.HTML สำหรับ .NET เป็นไลบรารีที่ ## เหตุใดจึงต้องใช้ Aspose.HTML สำหรับ .NET? -ก่อนอื่น มาพูดคุยกันก่อนว่าทำไมคุณควรเลือก Aspose.HTML สำหรับ .NET เพื่อสร้างรูปภาพ ไลบรารีนี้ช่วยให้แปลง HTML เป็นรูปแบบรูปภาพต่างๆ ได้อย่างราบรื่นและมีประสิทธิภาพ รวมถึง JPG และ PNG ไม่ว่าคุณต้องการสร้างตัวอย่างเว็บไซต์ที่น่าดึงดูด สร้างภาพขนาดย่อ หรือสร้างรายงานที่ดึงดูดสายตา Aspose.HTML สำหรับ .NET จะช่วยคุณได้ +ก่อนอื่น มาพูดคุยกันก่อนว่าทำไมคุณควรเลือก Aspose.HTML สำหรับ .NET เพื่อสร้างรูปภาพ ไลบรารีนี้ช่วยให้แปลง HTML เป็นรูปแบบรูปภาพต่างๆ ได้อย่างราบรื่นและมีประสิทธิภาพ รวมถึง JPG และ PNG ไม่ว่าคุณต้องการสร้างตัวอย่างเว็บไซต์ที่น่าดึงดูด สร้างภาพขนาดย่อ หรือสร้างรายงานที่ดึงด ## การเริ่มต้น @@ -41,6 +41,8 @@ Aspose.HTML สำหรับ .NET นำเสนอวิธีการง เรียนรู้วิธีสร้างหน้าเว็บแบบไดนามิกโดยใช้ Aspose.HTML สำหรับ .NET บทช่วยสอนแบบทีละขั้นตอนนี้ครอบคลุมถึงข้อกำหนดเบื้องต้น เนมสเปซ และการเรนเดอร์ HTML ลงในรูปภาพ ### [สร้างภาพ PNG โดย ImageDevice ใน .NET ด้วย Aspose.HTML](./generate-png-images-by-imagedevice/) เรียนรู้การใช้ Aspose.HTML สำหรับ .NET เพื่อจัดการเอกสาร HTML แปลง HTML เป็นรูปภาพ และอื่นๆ อีกมากมาย บทช่วยสอนแบบทีละขั้นตอนพร้อมคำถามที่พบบ่อย +### [สร้าง PNG จาก HTML – คู่มือ C# ฉบับเต็มด้วย Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +เรียนรู้วิธีแปลง HTML เป็นไฟล์ PNG อย่างละเอียดด้วย C# และ Aspose.HTML ในคู่มือฉบับเต็มนี้ ## บทสรุป @@ -52,4 +54,4 @@ Aspose.HTML สำหรับ .NET นำเสนอวิธีการง {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/thai/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/thai/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..72795a2f6 --- /dev/null +++ b/html/thai/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,255 @@ +--- +category: general +date: 2026-01-10 +description: สร้าง PNG จาก HTML อย่างรวดเร็วด้วย Aspose.HTML เรียนรู้วิธีแปลง HTML + เป็น PNG, แสดง HTML เป็นภาพ, ตั้งขนาดภาพของ HTML, และบันทึก HTML เป็น PNG ในบทเรียนเดียว +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: th +og_description: สร้าง PNG จาก HTML ด้วย Aspose.HTML คู่มือนี้แสดงวิธีแปลง HTML เป็น + PNG, เรนเดอร์ HTML เป็นภาพ, ตั้งขนาดภาพ HTML, และบันทึก HTML เป็น PNG. +og_title: สร้าง PNG จาก HTML – คอร์สสอน C# อย่างครบถ้วน +tags: +- C# +- Aspose.HTML +- Image Rendering +title: สร้าง PNG จาก HTML – คู่มือ C# เต็มรูปแบบกับ Aspose.HTML +url: /th/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# สร้าง PNG จาก HTML – คำแนะนำ C# ฉบับสมบูรณ์ + +เคยต้องการ **สร้าง PNG จาก HTML** แต่ไม่แน่ใจว่าคลังใดจะให้ผลลัพธ์ที่พิกเซล‑เพอร์เฟคหรือไม่? คุณไม่ได้เป็นคนเดียวที่เจอปัญหา นักพัฒนาหลายคนเจออุปสรรคเมื่อพยายามแปลงหน้าเว็บแบบไดนามิกให้เป็นภาพคงที่สำหรับรายงาน, รูปย่อ, หรือพรีวิวอีเมล. + +ในคำแนะนำนี้ เราจะพาคุณผ่านโซลูชันแบบครบวงจรที่ **แปลง HTML เป็น PNG**, **เรนเดอร์ HTML เป็นภาพ**, ให้คุณ **กำหนดขนาดภาพจาก HTML**, และสุดท้าย **บันทึก HTML เป็น PNG**—ทั้งหมดด้วย Aspose.HTML สำหรับ .NET. เมื่อจบคุณจะมีแอปคอนโซลที่พร้อมรันและสร้างไฟล์ PNG ที่คมชัดตามขนาดที่คุณระบุ. + +## สิ่งที่คุณต้องเตรียม + +- **.NET 6.0** หรือใหม่กว่า (API ทำงานบน .NET Framework ได้เช่นกัน แต่ .NET 6 เป็นจุดที่เหมาะที่สุด). +- **Aspose.HTML for .NET** – คุณสามารถดาวน์โหลดได้จาก NuGet (`Install-Package Aspose.HTML`). +- ไฟล์ **input.html** ง่าย ๆ ที่คุณต้องการเรนเดอร์ ไม่ว่าจะเป็นเทมเพลตแบบคงที่หรือหน้าเว็บที่มีสไตล์เต็มรูปแบบก็ใช้ได้. +- Visual Studio, Rider หรือเครื่องมือแก้ไขใด ๆ ที่คุณชอบ. + +ไม่มีการพึ่งพาเพิ่มเติม, ไม่มีเบราว์เซอร์แบบ headless, เพียงแค่ไลบรารี .NET ที่สะอาด. + +## ขั้นตอนที่ 1: สร้าง PNG จาก HTML – ตั้งค่าโปรเจกต์ + +First, spin up a new console project and pull in the Aspose.HTML package. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +เมื่อแพคเกจถูกกู้คืนแล้ว เปิดไฟล์ `Program.cs`. เราจะเปลี่ยนเนื้อหาเริ่มต้นเป็นตัวอย่างเต็มในภายหลัง แต่ตอนนี้ให้ตรวจสอบว่าโปรเจกต์สามารถคอมไพล์ได้: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Run `dotnet run`. If you see the greeting, you’re good to go. + +## ขั้นตอนที่ 2: แปลง HTML เป็น PNG – โหลดเอกสาร + +Now we actually **convert HTML to PNG**. The first thing we need is an `HTMLDocument` object that points at our source file. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **ทำไมจึงสำคัญ:** `HTMLDocument` จะทำการพาร์สมาร์กอัป, ประยุกต์ CSS, และสร้าง DOM ที่ Aspose.HTML สามารถแรสเตอร์ได้ในภายหลัง การข้ามขั้นตอนนี้หมายความว่าเรนเดอร์ไม่มีข้อมูลให้ทำงาน. + +## ขั้นตอนที่ 3: เรนเดอร์ HTML เป็นภาพ – กำหนดตัวเลือกการเรนเดอร์ภาพ + +Rendering is where you **set image size HTML** and tweak quality settings like antialiasing. The `ImageRenderingOptions` class gives you fine‑grained control. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **เคล็ดลับ:** หากคุณละเว้น `Width` และ `Height` Aspose.HTML จะใช้ขนาดโดยธรรมชาติของหน้า ซึ่งอาจใหญ่มากสำหรับการออกแบบที่ตอบสนองสมัยใหม่ การระบุขนาดจะทำให้ PNG มีขนาดเบา. + +## ขั้นตอนที่ 4: บันทึก HTML เป็น PNG – ทำการแปลง + +With the document and options ready, we call `ImageConverter`. This step **saves HTML as PNG** to the location you choose. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +The `using` block ensures the converter releases any native resources, which is especially important in long‑running services. + +## ขั้นตอนที่ 5: ตรวจสอบผลลัพธ์ – ตรวจสอบอย่างรวดเร็ว + +After the conversion finishes, it’s a good idea to confirm the file exists and has the expected dimensions. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Open `output.png` in any image viewer. You should see your original HTML rendered at 1024 × 768 pixels, with crisp text and smooth edges. + +## ตัวอย่างทำงานเต็มรูปแบบ + +Putting everything together you get a single, self‑contained program: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Save this as `Program.cs`, replace `YOUR_DIRECTORY` with the actual folder path, and run `dotnet run`. The console will walk you through each stage and confirm the PNG file’s creation. + +## คำถามทั่วไป & กรณีขอบ + +### “ถ้า HTML ของฉันใช้ CSS หรือรูปภาพภายนอกล่ะ?” + +Aspose.HTML จะทำการแก้ไข URL แบบ relative อัตโนมัติตามไดเรกทอรีของไฟล์ต้นฉบับ เพียงตรวจสอบว่า assets ทั้งหมดเข้าถึงได้จากโฟลเดอร์เดียวกันหรือให้ URL แบบ absolute. + +### “ฉันสามารถเรนเดอร์เฉพาะองค์ประกอบหนึ่งแทนที่จะเป็นทั้งหน้าได้ไหม?” + +Yes. Load the document, locate the element with `htmlDocument.QuerySelector`, and pass that node to `ImageConverter`. The API overload `Convert(IHTMLElement, string, ImageRenderingOptions)` does the trick. + +### “ฉันจะเปลี่ยนสีพื้นหลังของ PNG ได้อย่างไร?” + +Set `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (or any `System.Drawing.Color` you like) before calling `Convert`. + +### “มีวิธีรับไฟล์ JPEG แทน PNG หรือไม่?” + +Swap the output file extension to `.jpg` and optionally set `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. The converter will honor the requested format. + +## เคล็ดลับด้านประสิทธิภาพ + +- **ใช้ `ImageConverter` ซ้ำ** หากคุณประมวลผลไฟล์ HTML จำนวนมากเป็นชุด; การสร้างครั้งเดียวช่วยลดภาระเนทีฟ. +- **จำกัดขนาด viewport** (`Width`/`Height`) ให้เป็นขนาดที่คุณต้องการจริง ๆ — จะลดการใช้หน่วยความจำอย่างมาก. +- **ปิดคุณลักษณะที่ไม่จำเป็น** เช่น `UseAntialiasing` สำหรับกราฟิกเส้นง่าย; จะเร่งการเรนเดอร์โดยไม่มีการสูญเสียคุณภาพที่สังเกตได้. + +## ขั้นตอนต่อไป + +Now that you know how to **create PNG from HTML**, consider extending the workflow: + +- **การประมวลผลเป็นชุด** – วนลูปผ่านไดเรกทอรีของไฟล์ HTML และสร้างรูปย่อสำหรับแต่ละไฟล์. +- **การสร้าง HTML แบบไดนามิก** – ผสานเทมเพลต Razor หรือ StringBuilder กับ Aspose.HTML เพื่อสร้างภาพแบบเรียลไทม์ (เช่น แผนภูมิ, ใบรับรอง, หรือใบแจ้งหนี้). +- **การผสานกับ Web API** – เปิด endpoint ที่รับ HTML ดิบและส่งคืนสตรีม PNG, เหมาะสำหรับบริการ SaaS. + +Each of these ideas builds on the same core concepts we covered: loading an `HTMLDocument`, configuring `ImageRenderingOptions`, and calling `ImageConverter`. + +### TL;DR + +We’ve shown a straightforward, production‑ready way to **create PNG from HTML** using Aspose.HTML for .NET. The tutorial walks you through installing the package, loading HTML, setting size and quality, converting to PNG, and verifying the result. With the full source code at hand, you can adapt the pattern to batch jobs, web services, or any scenario where you need to **convert HTML to PNG**, **render HTML as image**, **set image size HTML**, and **save HTML as PNG**. Happy coding! + +![แผนภาพแสดงกระบวนการจากไฟล์ HTML → Aspose.HTML → ผลลัพธ์ PNG (create png from html)](placeholder-image.png "แผนภาพการไหลของการสร้าง PNG จาก HTML") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/turkish/net/generate-jpg-and-png-images/_index.md b/html/turkish/net/generate-jpg-and-png-images/_index.md index 1c1cfbfa4..f002c3509 100644 --- a/html/turkish/net/generate-jpg-and-png-images/_index.md +++ b/html/turkish/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Aspose.HTML for .NET'i .NET projelerinize entegre etmek zahmetsizdir. Kütüphan Aspose.HTML for .NET kullanarak dinamik web sayfaları oluşturmayı öğrenin. Bu adım adım eğitim, ön koşulları, ad alanlarını ve HTML'yi resimlere dönüştürmeyi kapsar. ### [Aspose.HTML ile .NET'te ImageDevice ile PNG Görüntüleri Oluşturun](./generate-png-images-by-imagedevice/) HTML belgelerini düzenlemek, HTML'yi resimlere dönüştürmek ve daha fazlası için Aspose.HTML for .NET'i kullanmayı öğrenin. SSS'li adım adım eğitim. +### [HTML'den PNG Oluşturun – Aspose.HTML ile Tam C# Kılavuzu](./create-png-from-html-full-c-guide-with-aspose-html/) +Aspose.HTML kullanarak HTML'den PNG dosyaları oluşturmayı adım adım öğrenin. Tam C# örnekleri ve ipuçlarıyla. ## Çözüm @@ -52,4 +54,4 @@ Sonuç olarak, Aspose.HTML for .NET, HTML içeriğinden JPG ve PNG görüntüler {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/turkish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/turkish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..efd3de626 --- /dev/null +++ b/html/turkish/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,259 @@ +--- +category: general +date: 2026-01-10 +description: Aspose.HTML kullanarak HTML'den hızlıca PNG oluşturun. Tek bir öğreticide + HTML'yi PNG'ye dönüştürmeyi, HTML'yi görüntü olarak render etmeyi, görüntü boyutunu + HTML'de ayarlamayı ve HTML'yi PNG olarak kaydetmeyi öğrenin. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: tr +og_description: Aspose.HTML ile HTML'den PNG oluşturun. Bu kılavuz, HTML'yi PNG'ye + dönüştürmeyi, HTML'yi resim olarak render etmeyi, HTML'nin resim boyutunu ayarlamayı + ve HTML'yi PNG olarak kaydetmeyi gösterir. +og_title: HTML'den PNG Oluştur – Tam C# Öğreticisi +tags: +- C# +- Aspose.HTML +- Image Rendering +title: HTML'den PNG Oluşturma – Aspose.HTML ile Tam C# Rehberi +url: /tr/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# HTML'den PNG Oluşturma – Tam C# Öğreticisi + +Hiç **HTML'den PNG oluşturma** ihtiyacı duydunuz ama hangi kütüphanenin piksel‑tam sonuçlar vereceğinden emin değildiniz? Yalnız değilsiniz. Birçok geliştirici, dinamik bir web sayfasını raporlar, küçük resimler veya e‑posta ön izlemeleri için statik bir görüntüye dönüştürmeye çalışırken bir duvara çarpar. + +Bu rehberde, **HTML'yi PNG'ye dönüştüren**, **HTML'yi görüntü olarak render eden**, **HTML'de görüntü boyutunu ayarlamanıza** izin veren ve sonunda **HTML'yi PNG olarak kaydeden** pratik, uçtan uca bir çözümü Aspose.HTML for .NET ile adım adım inceleyeceğiz. Sonunda, belirttiğiniz boyutta net bir PNG dosyası üreten, çalıştırmaya hazır bir konsol uygulamanız olacak. + +## Gereksinimler + +- **.NET 6.0** veya üzeri (API .NET Framework'te de çalışır, ancak .NET 6 en uygun sürümdür). +- **Aspose.HTML for .NET** – NuGet'ten alabilirsiniz (`Install-Package Aspose.HTML`). +- Render etmek istediğiniz basit bir **input.html** dosyası. Statik bir şablondan tam stil verilen bir sayfaya kadar her şey çalışır. +- Visual Studio, Rider veya tercih ettiğiniz herhangi bir editör. + +Ek bağımlılıklar yok, headless tarayıcılar yok, sadece temiz bir .NET kütüphanesi. + +## Adım 1: HTML'den PNG Oluşturma – Proje Kurulumu + +İlk olarak, yeni bir konsol projesi oluşturun ve Aspose.HTML paketini ekleyin. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Paket geri yüklendikten sonra `Program.cs` dosyasını açın. Daha sonra varsayılan içeriği tam örnekle değiştireceğiz, ancak şimdilik projenin derlendiğini doğrulayın: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +`dotnet run` komutunu çalıştırın. Selamlamayı görürseniz, hazırsınız. + +## Adım 2: HTML'yi PNG'ye Dönüştür – Belgeyi Yükleme + +Şimdi gerçekten **HTML'yi PNG'ye dönüştürüyoruz**. İlk olarak ihtiyacımız olan, kaynak dosyamıza işaret eden bir `HTMLDocument` nesnesidir. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Neden önemli:** `HTMLDocument` işaretlemi ayrıştırır, CSS'yi uygular ve Aspose.HTML'in daha sonra rasterleştirebileceği bir DOM oluşturur. Bu adımı atlamak, renderlayıcının çalışacak bir şey bulamaması demektir. + +## Adım 3: HTML'yi Görüntü Olarak Render Et – Görüntü Render Seçeneklerini Tanımlama + +Renderlama, **HTML'de görüntü boyutunu ayarladığınız** ve antialiasing gibi kalite ayarlarını ince ayar yaptığınız yerdir. `ImageRenderingOptions` sınıfı size ayrıntılı kontrol sağlar. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Pro ipucu:** `Width` ve `Height` değerlerini atlayarsanız, Aspose.HTML sayfanın içsel boyutunu kullanır; bu, modern duyarlı tasarımlar için çok büyük olabilir. Boyutları belirlemek PNG'nin hafif kalmasını sağlar. + +## Adım 4: HTML'yi PNG Olarak Kaydet – Dönüşümü Gerçekleştirme + +Belge ve seçenekler hazır olduğunda `ImageConverter`'ı çağırıyoruz. Bu adım **HTML'yi PNG olarak kaydeder** seçtiğiniz konuma. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +`using` bloğu, dönüştürücünün tüm yerel kaynakları serbest bırakmasını sağlar; bu, uzun süre çalışan hizmetlerde özellikle önemlidir. + +## Adım 5: Sonucu Doğrulama – Hızlı Kontrol + +Dönüştürme tamamlandıktan sonra, dosyanın var olduğunu ve beklenen boyutlarda olduğunu doğrulamak iyi bir fikirdir. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +`output.png` dosyasını herhangi bir görüntü görüntüleyicide açın. Orijinal HTML'nizin 1024 × 768 pikselde render edildiğini, net metin ve yumuşak kenarlarla görmelisiniz. + +## Tam Çalışan Örnek + +Her şeyi bir araya getirdiğinizde tek bir, bağımsız program elde edersiniz: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Bunu `Program.cs` olarak kaydedin, `YOUR_DIRECTORY` kısmını gerçek klasör yolu ile değiştirin ve `dotnet run` komutunu çalıştırın. Konsol size her aşamayı gösterecek ve PNG dosyasının oluşturulduğunu onaylayacaktır. + +## Yaygın Sorular & Özel Durumlar + +### “HTML'm dış CSS veya resimler kullanıyorsa ne olur?” + +Aspose.HTML, kaynak dosyanın dizinine göre göreceli URL'leri otomatik olarak çözer. Tüm varlıkların aynı klasörden erişilebilir olduğundan veya mutlak bir URL sağladığınızdan emin olun. + +### “Tüm sayfa yerine belirli bir öğeyi render edebilir miyim?” + +Evet. Belgeyi yükleyin, `htmlDocument.QuerySelector` ile öğeyi bulun ve o düğümü `ImageConverter`'a geçirin. API aşırı yüklemesi `Convert(IHTMLElement, string, ImageRenderingOptions)` bunu sağlar. + +### “PNG'nin arka plan rengini nasıl değiştiririm?” + +`Convert`'i çağırmadan önce `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (veya istediğiniz herhangi bir `System.Drawing.Color`) ayarlayın. + +### “PNG yerine JPEG almak mümkün mü?” + +Çıktı dosya uzantısını `.jpg` olarak değiştirin ve isteğe bağlı olarak `renderingOptions.ImageFormat = ImageFormat.Jpeg;` ayarlayın. Dönüştürücü istenen formatı dikkate alacaktır. + +## Performans İpuçları + +- **`ImageConverter`'ı yeniden kullanın**; bir toplu işlemde birçok HTML dosyası işliyorsanız, bir kez oluşturmak yerel yükü azaltır. +- **Görünüm alanı boyutunu sınırlayın** (`Width`/`Height`) gerçek ihtiyacınız olan en küçük boyutlara—bu bellek kullanımını büyük ölçüde azaltır. +- **Basit çizgi grafikleri için `UseAntialiasing` gibi gereksiz özellikleri kapatın**; bu, fark edilir kalite kaybı olmadan renderlamayı hızlandırır. + +## Sonraki Adımlar + +Artık **HTML'den PNG oluşturma** yöntemini bildiğinize göre, iş akışını genişletmeyi düşünün: + +- **Toplu işleme** – bir dizindeki HTML dosyaları üzerinde döngü kurup her biri için küçük resimler oluşturun. +- **Dinamik HTML oluşturma** – Razor şablonlarını veya StringBuilder'ı Aspose.HTML ile birleştirerek anlık görüntüler üretin (örneğin grafikler, sertifikalar veya faturalar). +- **Web API'leriyle entegrasyon** – ham HTML kabul eden ve PNG akışı dönen bir uç nokta sunun, SaaS hizmetleri için mükemmel. + +Bu fikirlerin her biri, ele aldığımız aynı temel kavramlara dayanır: bir `HTMLDocument` yüklemek, `ImageRenderingOptions` yapılandırmak ve `ImageConverter`'ı çağırmak. + +--- + +### TL;DR + +Aspose.HTML for .NET kullanarak **HTML'den PNG oluşturma** için basit, üretim‑hazır bir yol gösterdik. Öğretici, paketi kurmaktan HTML'yi yüklemeye, boyut ve kalite ayarlarından PNG'ye dönüştürmeye ve sonucu doğrulamaya kadar adım adım ilerliyor. Tam kaynak kodu elinizde olduğunda, bu deseni toplu işler, web servisleri veya **HTML'yi PNG'ye dönüştürme**, **HTML'yi görüntü olarak render etme**, **HTML'de görüntü boyutunu ayarlama** ve **HTML'yi PNG olarak kaydetme** ihtiyacı olan herhangi bir senaryoya uyarlayabilirsiniz. Kodlamanın tadını çıkarın! + +![Diagram showing the flow from HTML file → Aspose.HTML → PNG output (create png from html)](placeholder-image.png "Create PNG from HTML flow diagram") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/vietnamese/net/generate-jpg-and-png-images/_index.md b/html/vietnamese/net/generate-jpg-and-png-images/_index.md index a600ee56d..c6b323fdf 100644 --- a/html/vietnamese/net/generate-jpg-and-png-images/_index.md +++ b/html/vietnamese/net/generate-jpg-and-png-images/_index.md @@ -41,6 +41,8 @@ Tích hợp Aspose.HTML cho .NET vào các dự án .NET của bạn thật dễ Tìm hiểu cách tạo trang web động bằng Aspose.HTML cho .NET. Hướng dẫn từng bước này bao gồm các điều kiện tiên quyết, không gian tên và kết xuất HTML thành hình ảnh. ### [Tạo hình ảnh PNG bằng ImageDevice trong .NET với Aspose.HTML](./generate-png-images-by-imagedevice/) Học cách sử dụng Aspose.HTML cho .NET để thao tác với các tài liệu HTML, chuyển đổi HTML thành hình ảnh và nhiều hơn nữa. Hướng dẫn từng bước có Câu hỏi thường gặp. +### [Tạo PNG từ HTML – Hướng dẫn C# đầy đủ với Aspose.HTML](./create-png-from-html-full-c-guide-with-aspose-html/) +Hướng dẫn chi tiết cách chuyển đổi HTML thành ảnh PNG bằng C# và Aspose.HTML, bao gồm các bước cài đặt và tối ưu hóa. ## Phần kết luận @@ -52,4 +54,4 @@ Vậy thì còn chần chừ gì nữa? Hãy bắt đầu khám phá thế giớ {{< /blocks/products/pf/main-container >}} {{< /blocks/products/pf/main-wrap-class >}} -{{< blocks/products/products-backtop-button >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file diff --git a/html/vietnamese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md b/html/vietnamese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md new file mode 100644 index 000000000..2143e1290 --- /dev/null +++ b/html/vietnamese/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/_index.md @@ -0,0 +1,259 @@ +--- +category: general +date: 2026-01-10 +description: Tạo PNG từ HTML nhanh chóng bằng Aspose.HTML. Tìm hiểu cách chuyển đổi + HTML sang PNG, render HTML thành hình ảnh, thiết lập kích thước hình ảnh HTML và + lưu HTML dưới dạng PNG trong một hướng dẫn duy nhất. +draft: false +keywords: +- create png from html +- convert html to png +- render html as image +- set image size html +- save html as png +language: vi +og_description: Tạo PNG từ HTML với Aspose.HTML. Hướng dẫn này chỉ cách chuyển đổi + HTML sang PNG, hiển thị HTML dưới dạng hình ảnh, thiết lập kích thước hình ảnh HTML + và lưu HTML dưới dạng PNG. +og_title: Tạo PNG từ HTML – Hướng dẫn C# toàn diện +tags: +- C# +- Aspose.HTML +- Image Rendering +title: Tạo PNG từ HTML – Hướng dẫn C# đầy đủ với Aspose.HTML +url: /vi/net/generate-jpg-and-png-images/create-png-from-html-full-c-guide-with-aspose-html/ +--- + +{{< blocks/products/pf/main-wrap-class >}} +{{< blocks/products/pf/main-container >}} +{{< blocks/products/pf/tutorial-page-section >}} + +# Tạo PNG từ HTML – Hướng Dẫn C# Hoàn Chỉnh + +Bạn đã bao giờ cần **tạo PNG từ HTML** nhưng không chắc thư viện nào sẽ cho kết quả pixel‑perfect? Bạn không phải là người duy nhất. Nhiều nhà phát triển gặp khó khăn khi muốn chuyển một trang web động thành ảnh tĩnh cho báo cáo, thumbnail, hoặc preview email. + +Trong hướng dẫn này, chúng ta sẽ đi qua một giải pháp thực tế, từ đầu đến cuối để **chuyển đổi HTML sang PNG**, **render HTML thành ảnh**, cho phép bạn **đặt kích thước ảnh HTML**, và cuối cùng **lưu HTML dưới dạng PNG**—tất cả đều bằng Aspose.HTML cho .NET. Khi hoàn thành, bạn sẽ có một ứng dụng console sẵn sàng chạy và tạo ra file PNG sắc nét đúng kích thước bạn chỉ định. + +## Những Gì Bạn Cần Chuẩn Bị + +Trước khi bắt đầu viết code, hãy chắc chắn bạn đã có: + +- **.NET 6.0** trở lên (API cũng hoạt động trên .NET Framework, nhưng .NET 6 là lựa chọn tối ưu). +- **Aspose.HTML for .NET** – có thể tải từ NuGet (`Install-Package Aspose.HTML`). +- Một file **input.html** đơn giản mà bạn muốn render. Bất kỳ file nào từ template tĩnh đến trang được style đầy đủ đều được. +- Visual Studio, Rider, hoặc bất kỳ trình soạn thảo nào bạn thích. + +Không cần phụ thuộc thêm, không cần trình duyệt headless, chỉ một thư viện .NET sạch sẽ. + +## Bước 1: Tạo PNG từ HTML – Thiết Lập Dự Án + +Đầu tiên, tạo một dự án console mới và thêm gói Aspose.HTML. + +```bash +dotnet new console -n HtmlToPngDemo +cd HtmlToPngDemo +dotnet add package Aspose.HTML +``` + +Sau khi gói được khôi phục, mở `Program.cs`. Chúng ta sẽ thay thế nội dung mặc định bằng ví dụ đầy đủ sau, nhưng hiện tại chỉ cần xác nhận dự án biên dịch được: + +```csharp +using System; + +Console.WriteLine("Project ready – let’s render HTML!"); +``` + +Chạy `dotnet run`. Nếu bạn thấy lời chào, mọi thứ đã sẵn sàng. + +## Bước 2: Chuyển Đổi HTML sang PNG – Tải Tài Liệu + +Bây giờ chúng ta thực sự **chuyển đổi HTML sang PNG**. Điều đầu tiên cần làm là tạo một đối tượng `HTMLDocument` trỏ tới file nguồn của chúng ta. + +```csharp +using Aspose.Html; +using System; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Load the HTML file you want to turn into an image. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + + Console.WriteLine($"Loaded HTML from {htmlPath}"); + } + } +} +``` + +> **Tại sao lại quan trọng:** `HTMLDocument` phân tích markup, áp dụng CSS, và xây dựng DOM mà Aspose.HTML sẽ rasterize sau này. Bỏ qua bước này đồng nghĩa với việc renderer không có gì để làm việc. + +## Bước 3: Render HTML thành Ảnh – Định Nghĩa Tùy Chọn Render Ảnh + +Quá trình render là nơi bạn **đặt kích thước ảnh HTML** và tinh chỉnh các thiết lập chất lượng như antialiasing. Lớp `ImageRenderingOptions` cung cấp điều khiển chi tiết. + +```csharp +using Aspose.Html.Rendering.Image; + +// Inside Main(), after creating htmlDocument: +var renderingOptions = new ImageRenderingOptions +{ + // Turn on antialiasing for smoother edges. + UseAntialiasing = true, + + // Hinting improves how text looks on low‑resolution images. + TextOptions = new TextOptions { UseHinting = true }, + + // Explicitly set the output dimensions. + Width = 1024, // pixels + Height = 768 // pixels +}; + +Console.WriteLine("Rendering options configured (1024x768, antialiasing on)."); +``` + +> **Mẹo chuyên nghiệp:** Nếu bạn không chỉ định `Width` và `Height`, Aspose.HTML sẽ dùng kích thước nội tại của trang, có thể rất lớn đối với các thiết kế responsive hiện đại. Đặt kích thước giúp PNG nhẹ hơn. + +## Bước 4: Lưu HTML dưới Dạng PNG – Thực Hiện Chuyển Đổi + +Với tài liệu và các tùy chọn đã sẵn sàng, chúng ta gọi `ImageConverter`. Bước này **lưu HTML dưới dạng PNG** vào vị trí bạn chọn. + +```csharp +using Aspose.Html.Converters; +using System.IO; + +// Still inside Main(): +var outputPath = @"YOUR_DIRECTORY/output.png"; + +using (var imageConverter = new ImageConverter()) +{ + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); +} + +Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); +``` + +Khối `using` đảm bảo converter giải phóng mọi tài nguyên native, điều này đặc biệt quan trọng trong các dịch vụ chạy lâu dài. + +## Bước 5: Kiểm Tra Kết Quả – Kiểm Tra Nhanh + +Sau khi chuyển đổi hoàn tất, nên xác nhận file tồn tại và có kích thước như mong đợi. + +```csharp +if (File.Exists(outputPath)) +{ + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); +} +else +{ + Console.WriteLine("❌ Something went wrong – output file not found."); +} +``` + +Mở `output.png` bằng bất kỳ trình xem ảnh nào. Bạn sẽ thấy HTML gốc của mình được render ở kích thước 1024 × 768 pixel, với văn bản sắc nét và các cạnh mượt mà. + +## Ví Dụ Hoàn Chỉnh + +Kết hợp tất cả lại, bạn sẽ có một chương trình duy nhất, tự chứa: + +```csharp +using System; +using System.IO; +using Aspose.Html; +using Aspose.Html.Converters; +using Aspose.Html.Rendering.Image; + +namespace HtmlToPngDemo +{ + class Program + { + static void Main() + { + // Step 1 – Load the HTML file. + var htmlPath = @"YOUR_DIRECTORY/input.html"; + var htmlDocument = new HTMLDocument(htmlPath); + Console.WriteLine($"Loaded HTML from {htmlPath}"); + + // Step 2 – Set rendering options (size, antialiasing, hinting). + var renderingOptions = new ImageRenderingOptions + { + UseAntialiasing = true, + TextOptions = new TextOptions { UseHinting = true }, + Width = 1024, + Height = 768 + }; + Console.WriteLine("Rendering options set (1024x768, antialiasing on)."); + + // Step 3 – Convert and save as PNG. + var outputPath = @"YOUR_DIRECTORY/output.png"; + using (var imageConverter = new ImageConverter()) + { + imageConverter.Convert(htmlDocument, outputPath, renderingOptions); + } + Console.WriteLine($"✅ Rendering completed – PNG saved to {outputPath}"); + + // Step 4 – Verify the file. + if (File.Exists(outputPath)) + { + var fileInfo = new FileInfo(outputPath); + Console.WriteLine($"File size: {fileInfo.Length / 1024} KB"); + } + else + { + Console.WriteLine("❌ Output file not found."); + } + } + } +} +``` + +Lưu lại dưới tên `Program.cs`, thay `YOUR_DIRECTORY` bằng đường dẫn thư mục thực tế, và chạy `dotnet run`. Console sẽ hướng dẫn bạn qua từng giai đoạn và xác nhận việc tạo file PNG. + +## Các Câu Hỏi Thường Gặp & Trường Hợp Cạnh + +### “Nếu HTML của tôi dùng CSS hoặc hình ảnh bên ngoài thì sao?” +Aspose.HTML tự động giải quyết các URL tương đối dựa trên thư mục của file nguồn. Chỉ cần đảm bảo tất cả tài nguyên có thể truy cập từ cùng một folder hoặc cung cấp URL tuyệt đối. + +### “Tôi có thể render một phần tử cụ thể thay vì toàn bộ trang không?” +Có. Tải tài liệu, tìm phần tử bằng `htmlDocument.QuerySelector`, và truyền node đó cho `ImageConverter`. Phương thức overload `Convert(IHTMLElement, string, ImageRenderingOptions)` thực hiện điều này. + +### “Làm sao thay đổi màu nền của PNG?” +Đặt `renderingOptions.BackgroundColor = System.Drawing.Color.White;` (hoặc bất kỳ `System.Drawing.Color` nào bạn muốn) trước khi gọi `Convert`. + +### “Có cách lấy JPEG thay vì PNG không?” +Thay đổi phần mở rộng file đầu ra thành `.jpg` và tùy chọn `renderingOptions.ImageFormat = ImageFormat.Jpeg;`. Converter sẽ tuân theo định dạng yêu cầu. + +## Mẹo Tối Ưu Hiệu Suất + +- **Tái sử dụng `ImageConverter`** nếu bạn xử lý nhiều file HTML trong một batch; tạo một lần sẽ giảm overhead native. +- **Giới hạn kích thước viewport** (`Width`/`Height`) tới kích thước nhỏ nhất thực sự cần—điều này giảm đáng kể việc sử dụng bộ nhớ. +- **Tắt các tính năng không cần** như `UseAntialiasing` cho đồ họa đơn giản; sẽ tăng tốc render mà không ảnh hưởng lớn tới chất lượng. + +## Bước Tiếp Theo + +Bây giờ bạn đã biết cách **tạo PNG từ HTML**, hãy cân nhắc mở rộng quy trình: + +- **Xử lý batch** – lặp qua một thư mục các file HTML và tạo thumbnail cho mỗi file. +- **Tạo HTML động** – kết hợp Razor templates hoặc StringBuilder với Aspose.HTML để tạo ảnh “on‑the‑fly” (ví dụ biểu đồ, chứng chỉ, hoặc hoá đơn). +- **Tích hợp với API web** – cung cấp endpoint nhận HTML thô và trả về stream PNG, lý tưởng cho các dịch vụ SaaS. + +Mỗi ý tưởng này dựa trên các khái niệm cốt lõi chúng ta đã đề cập: tải `HTMLDocument`, cấu hình `ImageRenderingOptions`, và gọi `ImageConverter`. + +--- + +### TL;DR + +Chúng tôi đã trình bày một cách đơn giản, sẵn sàng cho sản xuất để **tạo PNG từ HTML** bằng Aspose.HTML cho .NET. Hướng dẫn dẫn bạn qua việc cài đặt gói, tải HTML, đặt kích thước và chất lượng, chuyển đổi sang PNG, và kiểm tra kết quả. Với mã nguồn đầy đủ trong tay, bạn có thể áp dụng mẫu này cho các công việc batch, dịch vụ web, hoặc bất kỳ kịch bản nào cần **chuyển đổi HTML sang PNG**, **render HTML thành ảnh**, **đặt kích thước ảnh HTML**, và **lưu HTML dưới dạng PNG**. Chúc bạn lập trình vui vẻ! + +--- + +![Diagram showing the flow from HTML file → Aspose.HTML → PNG output (create png from html)](placeholder-image.png "Create PNG from HTML flow diagram") + +{{< /blocks/products/pf/tutorial-page-section >}} +{{< /blocks/products/pf/main-container >}} +{{< /blocks/products/pf/main-wrap-class >}} +{{< blocks/products/products-backtop-button >}} \ No newline at end of file