ReformBox

ReformBox extends WordPress Lightbox functionality beyond images. It currently supports Group, Paragraph, and Video blocks with poster images directly, while delegating Image lightbox behavior to WordPress core. For core/image, ReformBox only syncs the sidebar toggle with core lightbox settings.

This plugin is developed on GitHub.

Supported Blocks:

• Image Block – Uses WordPress core lightbox behavior (ReformBox panel toggles core lightbox.enabled )

• Video Block – Opens in a lightbox when a poster image is set (poster acts as the click trigger)

• Group Block – Supports both same mode (same content in page + modal) and split mode (separate Preview/Modal direct child Group slots)

• Paragraph Block – Click to open itself in a lightbox

Features:

• No-code lightbox creation via block editor controls

• Core-first image lightbox integration ( core/image )

• Core-aligned overlay markup for custom lightboxes

• Core-aligned zoom animation

• ESC key and overlay click to close

• Accessible (ARIA attributes, focus management, keyboard navigation)

• Group split mode with Preview/Modal slot mapping

• Safe split fallback: if no Modal slot is assigned, Preview content is used

• Lazy-loaded assets (CSS/JS only loaded when needed)

• Self-lightbox videos defer preload/autoplay until opened

• Core image workflow integration without overriding core image rendering

• Global overlay background color and opacity controls in Settings > ReformBox

• Plugin list row includes a Settings action link for quick access

• Lightweight and performant