- add pixel art animator to sidebar.html, tools.json and add screenshot

- fix gif export and add a few extra features (undo/redo, select/move, custom canvas size, etc.)

Author: TobiasMue91

data/tools.json

@@ -1626,5 +1626,16 @@
     "aiPowered": false,
     "featured": false,
     "date": "2025-06-20"
+  },
+  {
+    "id": "pixel_art_animator",
+    "title": "Pixel Art Animator",
+    "description": "Create stunning pixel art animations with our free online tool. Draw frame-by-frame animations, export as GIF, and bring your pixel art to life with professional features.",
+    "url": "tools/pixel_art_animator.html",
+    "screenshot": "screenshots/screenshot_211.webp",
+    "type": "tool",
+    "aiPowered": false,
+    "featured": false,
+    "date": "2025-07-04"
   }
 ]

screenshots/screenshot_211.webp

@@ -296,6 +296,7 @@ <h2>Tools by ChatGPT</h2>
       <li><a href="/tools/decision_wheel.html">Decision Wheel</a></li>
       <li><a href="/games/reversi.html">Reversi</a></li>
       <li><a href="/tools/flashcard_creator.html">Flashcard Creator</a></li>
+      <li><a href="/tools/pixel_art_animator.html">Pixel Art Animator</a></li>
 <!-- end -->
     </ul>
   </div>