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.

Tim Eckel

Easily create responsive WYSIWYG popup modals that are displayed at a user-specified frequency and optionally printed with a single click (great for coupons!). Simple to use, yet advanced options:
<ul>
<li>Disable popup: (check to disable, uncheck to enable)</li>
<li>Frequency of popup: (Define how frequently each popup will display: every refresh, once per session, various minutes, various hours, weekly, monthly, yearly, or only once)</li>
<li>Popup expires after: (Specify the date the popup will expire, or never expire) [date picker UI]</li>
<li>Display popup on: (All pages, front page only, or interior pages only)</li>
<li>Print option: (Allow printing of the popup)</li>
<li>Popup location: (Centered, top center, bottom center)</li>
<li>Maximum width: (Define the maximum width of the popup in pixels)</li>
<li>Show title: (Allow the popup title to be visible or hidden for each popup)</li>
<li>Text color: (Select a foreground text color for each popup window) [color picker UI]</li>
<li>Background color: (Select a background color for each popup window) [color picker UI]</li>
<li>Button location (No buttons “X” to close, left, center, or right)</li>
<li>Test popup (while creating in the admin console)</li>
</ul>

Popup Modal

Easily create responsive WYSIWYG modals that popup at your desired frequency and optionally print with a single click.

ReformBox vs Popup Modal