PDF Page Modifier

A powerful desktop application for PDF page management with dual-mode functionality. Easily remove unwanted pages or extract specific pages from PDF files through an intuitive graphical interface with visual page previews.

Features

• 🎯 Dual-Mode Operation:
  • Remove Mode: Remove selected pages (red borders)
  • Keep Mode: Keep only selected pages (green borders)
• 📄 Load PDF Files: Open any PDF file through a file browser dialog
• 🖼️ Visual Page Preview: High-quality thumbnail previews of all PDF pages
• 🎨 Color-Coded Selection: Visual feedback with red/green borders based on mode
• ⚡ Batch Operations: Select all pages or clear selection with dedicated buttons
• 📊 Progress Tracking: Real-time progress bar and status updates during operations
• 💾 Smart Export: Save modified PDFs with intelligent operation summaries
• 🚀 Instant Access: Open created PDFs immediately or show in file explorer
• 🔧 No External Dependencies: Pure Python solution with no additional software required

Requirements

• Python 3.7 or higher
• Windows 10/11 (tested on Windows 10)
• Additional dependencies will be installed via pip

Installation

🚀 Option 1: Ready-to-Run Executable (Recommended)

For users who just want to use the application:

1. Download the repository
2. Run PDF_Page_Modifier.exe directly
3. No installation required! No Python, no dependencies, just double-click and go!

🛠️ Option 2: Run from Source Code

For developers or users who want to modify the code:

1. Clone or download this repository to your local machine

2. Install Python dependencies:

   pip install -r requirements.txt

3. Run the application:

   python pdf_page_modifier.py

🔧 Option 3: Build Your Own Executable

To create your own executable:

1. Install dependencies as in Option 2
2. Run the build script:

   build_executable.bat

3. Find your executable in the dist/ folder

Usage

🖱️ Using the Executable (Easiest)

1. Double-click PDF_Page_Modifier.exe

💻 Using Python Source Code

1. Run the application:

   python pdf_page_modifier.py

📋 Application Steps

1. Load a PDF file:

   • Click the "Load PDF File" button
   • Select your PDF file from the file browser
   • Wait for page thumbnails to generate

2. Choose your mode:

   • 🔴 Remove Selected Pages: Select pages to remove (red borders)
   • 🟢 Keep Selected Pages: Select pages to keep (green borders)

3. Select pages:

   • Click on page thumbnails to select/deselect them
   • Selected pages show colored borders matching your chosen mode
   • Use "Select All Pages" to select all pages
   • Use "Clear Selection" to deselect all pages

4. Save and access your PDF:

   • Click "Save Modified PDF" button

   • Choose a location and filename for the new PDF

   • Instantly open the created PDF with the "📂 Open PDF" button

   • Or show in folder with the "📁 Show in Folder" button

     

Interface Overview

• Left Panel (Controls):

  • Load PDF File button
  • File information display (filename and page count)
  • Mode selection radio buttons (Remove/Keep)
  • Page selection information with dynamic text based on mode
  • Select All/Clear Selection buttons
  • Progress bar and status display
  • Save Modified PDF button

• Right Panel (Page Preview):

  • Scrollable grid of high-quality page thumbnails (4 columns)
  • Click thumbnails to toggle selection
  • Color-coded borders:
    • 🔴 Red borders: Pages to remove (Remove mode)
    • 🟢 Green borders: Pages to keep (Keep mode)
    • ⚪ White background: Unselected pages

• Bottom: Interactive usage instructions

• Success Dialog (after saving):

  • ✅ Success confirmation with operation summary
  • 📂 "Open PDF" button to instantly view the created file
  • 📁 "Show in Folder" button to locate the file
    • ⌨️ Keyboard shortcuts (Enter to open, Escape to close)

Dual-Mode Operations

🔴 Remove Mode (Default)

Use Case: Remove unwanted pages from a PDF

• Visual: Selected pages have red borders
• Action: Selected pages are removed from the final PDF
• Examples:
  • Remove advertisement pages
  • Remove blank pages
  • Remove specific chapters or sections
  • Remove cover pages

🟢 Keep Mode

Use Case: Extract specific pages from a PDF

• Visual: Selected pages have green borders
• Action: Only selected pages are kept in the final PDF
• Examples:
  • Extract specific pages for sharing
  • Create a summary with key pages
  • Extract diagrams or charts
  • Create a custom document from multiple sources

Mode Switching

• Dynamic visual feedback: Colors change automatically when switching modes
• Preserved selection: Your page selection remains when switching modes
• Smart labeling: Interface text updates to match the current mode

Troubleshooting

Common Issues

1. "No module named 'fitz'" error:

   • Make sure you've installed all requirements: pip install -r requirements.txt
   • PyMuPDF should install automatically with the name 'fitz'

2. "Unable to get page count" or similar PDF errors:

   • Ensure the PDF file is not corrupted or password-protected
   • Try with a different PDF file

3. Application freezes when loading large PDFs:

   • This is normal for large PDFs - the application processes pages in the background
   • Wait for the progress bar to complete

Performance Tips

• Large PDFs (100+ pages) may take longer to load due to thumbnail generation
• The application uses threading to prevent GUI freezing during operations
• High-quality thumbnails are generated at 1.5x scale for better preview
• Consider closing other applications if you experience memory issues with very large PDFs
• PyMuPDF provides faster processing compared to traditional PDF libraries

Technical Details

• GUI Framework: tkinter (Python standard library)
• PDF Processing: PyPDF2 for writing PDFs, PyMuPDF for reading and image generation
• Image Processing: Pillow (PIL) for image handling
• PDF to Image Conversion: PyMuPDF (fitz) - no external dependencies required
• Threading: Used for non-blocking PDF operations

License

This project is open source and available under the MIT License.

Contributing

Feel free to submit issues, feature requests, or pull requests to improve the application.