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.

jaicreator

Image Popup Lite is a free and user-friendly WordPress plugin designed to grab your visitors’ attention with beautiful image popups. Perfect for promotions, announcements, or special offers.
This is the Lite version with essential features. Upgrade to Pro for custom button text, analytics tracking, and priority support.
<h3>Core Features (Lite Version)</h3>
<ul>
<li>✅ Simple On/Off Switch – Enable or disable the popup with a single click.</li>
<li>✅ Easy Image Upload – Uses the native WordPress Media Library for simplicity.</li>
<li>✅ Optimized 16:9 Aspect Ratio – Ensures your image looks professional on all modern screens.</li>
<li>✅ Preset Button Text – Choose from 5 preset button text options.</li>
<li>✅ Button Color Picker – Select the perfect color to match your brand’s style.</li>
<li>✅ Customizable Button Link – Direct visitors to any URL you want.</li>
<li>✅ 100% Responsive – Looks perfect on desktops, tablets, and mobile devices.</li>
</ul>
<h3>Pro Features (Upgrade Required)</h3>
<ul>
<li>⭐ Custom Button Name – Write your own unique call-to-action text.</li>
<li>⭐ Advanced Analytics Tracking – Track popup views, clicks, and conversion rates.</li>
<li>⭐ Priority Support – Get help directly from the developer.</li>
</ul>
<a href="https://www.codester.com/items/59691/wp-image-popup-pro-fast-popup-builder" rel="nofollow ugc">Upgrade to Pro Version →</a>

JaiCreator Image Popup Lite

Free image popup plugin with customizable buttons. Boost engagement easily. Lite version.

ReformBox vs JaiCreator Image Popup Lite