Tsubu

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 <code>core/image</code>, ReformBox only syncs the sidebar toggle with core lightbox settings.
<a href="https://github.com/tbshiki/reformbox" rel="nofollow ugc">This plugin is developed on GitHub.</a>
Supported Blocks:
<ul>
<li>Image Block – Uses WordPress core lightbox behavior (ReformBox panel toggles core <code>lightbox.enabled</code>)</li>
<li>Video Block – Opens in a lightbox when a poster image is set (poster acts as the click trigger)</li>
<li>Group Block – Supports both <code>same</code> mode (same content in page + modal) and <code>split</code> mode (separate Preview/Modal direct child Group slots)</li>
<li>Paragraph Block – Click to open itself in a lightbox</li>
</ul>
Features:
<ul>
<li>No-code lightbox creation via block editor controls</li>
<li>Core-first image lightbox integration (<code>core/image</code>)</li>
<li>Core-aligned overlay markup for custom lightboxes</li>
<li>Core-aligned zoom animation</li>
<li>ESC key and overlay click to close</li>
<li>Accessible (ARIA attributes, focus management, keyboard navigation)</li>
<li>Group split mode with Preview/Modal slot mapping</li>
<li>Safe split fallback: if no Modal slot is assigned, Preview content is used</li>
<li>Lazy-loaded assets (CSS/JS only loaded when needed)</li>
<li>Self-lightbox videos defer preload/autoplay until opened</li>
<li>Core image workflow integration without overriding core image rendering</li>
<li>Global overlay background color and opacity controls in Settings > ReformBox</li>
<li>Plugin list row includes a Settings action link for quick access</li>
<li>Lightweight and performant</li>
</ul>

ReformBox

Universal Lightbox for WordPress – lightbox support for Group, Paragraph, Video blocks with poster images, and core Image workflows.

Rodrigo Leon

This small plugin allows you to create a modal / popup / lightbox with WordPress’ default Block editor (Gutenberg). The plugin provides you with a block that can be used for the modal’s trigger and the modal’s window contents. Anything you can do with the block editor, you can use for the modal trigger or the contents.
<ul>
<li>Multiple trigger methods. Use the power of the Block Editor to create your trigger (buttons, images, covers, and more).</li>
<li>Flexible modal content. Similarly to the trigger, use the Block Editor to define the content inside your modal content.</li>
<li>Supports multiple modals on the same page.</li>
<li>More to come.</li>
</ul>
To create a modal, simply use the Modal Builder block to create a trigger. Use another Modal Builder block to create the content (make sure you select the appropriate content type under the modal settings). On both instances, set the “Content ID” to whatever you want as long as both instances match. You are set.
<h4>Donations</h4>
If you like the plugin, consider leaving a donation to support further development of the plugin. <a href="https://paypal.me/rodxleon" rel="nofollow ugc">Click here</a>. If you would like custom solutions or the like, please visit <a href="https://htr.design" rel="nofollow ugc">HTR.Design</a>.

Modal Builder Block

Build a modal with the power of WordPress' block editor. Anything you can do with the editor works inside of the modal content window or the moda …

ReformBox vs Modal Builder Block