- add clipboard paste support for images with Ctrl+V

- convert clipboard blobs to properly named `File` objects with timestamps
- display notifications for successful/failed paste attempts

Author: TobiasMue91

tools/image_converter.html

@@ -384,6 +384,48 @@ <h2 class="text-xl font-semibold text-gray-800">Conversion Results</h2>
         downloadAll();
     });
 
+    document.addEventListener('paste', async (e) => {
+        e.preventDefault();
+
+        if (!e.clipboardData || !e.clipboardData.items) {
+            showNotification('No clipboard data found', 'error');
+            return;
+        }
+
+        const items = Array.from(e.clipboardData.items);
+        const imageItems = items.filter(item => item.type.startsWith('image/'));
+
+        if (imageItems.length === 0) {
+            showNotification('No image found in clipboard', 'error');
+            return;
+        }
+
+        const files = [];
+        let processedCount = 0;
+
+        for (const item of imageItems) {
+            const blob = item.getAsFile();
+            if (blob) {
+                // Create a proper File object with a name
+                const timestamp = new Date().getTime();
+                const file = new File(
+                    [blob],
+                    `clipboard-image-${timestamp}.png`,
+                    { type: blob.type }
+                );
+                files.push(file);
+            }
+
+            processedCount++;
+            if (processedCount === imageItems.length) {
+                if (files.length > 0) {
+                    addFiles(files);
+                    showNotification('Image pasted from clipboard', 'success');
+                }
+            }
+        }
+    });
+
     // File handling functions
     function addFiles(newFiles) {
         for (const file of newFiles) {