Adds a lightbox option to the WordPress core Image block using Fancybox 4. This plugin lets you enable a lightbox view for individual images or group them into galleries by specifying a gallery slug.

• Adds an "Open in Lightbox" toggle to the core Image block.
• Allows specifying a gallery slug to group images.
• Supports captions.
• Uses Fancybox 4 for a lightweight, modern lightbox experience.
• Loads assets locally (no CDN dependency).
• Fully integrated with the block editor.

• WordPress 6.0+
• Node.js and npm (for development builds)
• Gutenberg block editor enabled

1. Download or clone this repository into your wp-content/plugins/ directory.
2. Run npm install to install dependencies.
3. Run npm run build to compile assets and copy vendor libraries.
4. Activate the Image Lightbox Gallery plugin from your WordPress admin.

1. Edit or create a post in the WordPress block editor.
2. Insert or select an Image block.
3. In the block settings sidebar, toggle "Open in Lightbox" to enable the feature.
4. Optionally, enter a Gallery Slug to group multiple images into a gallery.

Images with the same gallery slug will be grouped together in a Fancybox lightbox gallery.