image_404_fallback

The Image 404 Fallback module intercepts requests for missing image files and serves a configurable fallback image instead of returning a 404 error. This ensures that broken image links display a fallback rather than a broken image icon, maintaining a cleaner appearance on your site.

Features

• Automatically detects 404 image requests
• Serves a configurable fallback image
• Supports multiple image formats (JPG, PNG, GIF, WebP, SVG, BMP, ICO, AVIF)
• Includes a default fallback image (SVG)
• Configurable fallback path via admin interface
• Proper HTTP headers and caching

Post-Installation

1. Navigate to Configuration > Media > Image 404 Fallback Settings (`/admin/config/media/image-404-fallback`)
2. Optionally specify a custom fallback image path:
   • Enter an absolute path (e.g., `/var/www/html/placeholders/my-fallback.png`)
   • Or a path relative to the Drupal root (e.g., `sites/default/files/fallback.png`)
3. If left empty, the module will use its default fallback image located at `images/placeholder.svg`