- add Image Placeholder Generator to tools.json, sidebar.html and add screenshot

Author: TobiasMue91

data/tools.json

@@ -1637,5 +1637,16 @@
     "aiPowered": false,
     "featured": false,
     "date": "2025-07-04"
+  },
+  {
+    "id": "image_placeholder_generator",
+    "title": "Image Placeholder Generator",
+    "description": "Free online image placeholder generator with custom dimensions, colors, gradients, and text. Create placeholder images instantly for web design, mockups, and development projects.",
+    "url": "tools/image_placeholder_generator.html",
+    "screenshot": "screenshots/screenshot_212.webp",
+    "type": "tool",
+    "aiPowered": false,
+    "featured": false,
+    "date": "2025-07-11"
   }
 ]

screenshots/screenshot_212.webp

@@ -297,6 +297,7 @@ <h2>Tools by ChatGPT</h2>
       <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>
+      <li><a href="/tools/image_placeholder_generator.html">Image Placeholder Generator</a></li>
 <!-- end -->
     </ul>
   </div>