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.

bradvin

fooplugins

steveush

FooBox adds a lightbox to your WordPress site, so images are loaded in a modal or popup instead of redirecting your visitors away from your site.
Some people often refer to a lightbox as an “Image Zoom” effect. It’s really just a modal overlay or popup that showcases your images.
FooBox was the first lightbox to take responsive layout seriously. Not only does it scale images to look better on phones, but it rearranges it’s button controls to look great in both portrait or landscape orientation.
Add a modal popup to your website images with no setup. FooBox will automatically add modals to WordPress galleries, WordPress images with captions, and attachment images.
Works with most image gallery plugins, but works best with our <a href="https://fooplugins.com/foogallery-wordpress-gallery-plugin/" rel="nofollow ugc">FooGallery Gallery WordPress Plugin</a>.
FULL GUTENBERG SUPPORT
Within Gutenberg, FooBox lightbox will automatically add a modal popup to images and galleries that have the “Link To” setting set to “Media File”. 
Image captions set in the editor are also automatically picked up in the FooBox modal popup.
FooBox Image Lightbox Features:
<ul>
<li>Responsive lightbox design</li>
<li>Modern lightbox design</li>
<li>Zero configuration!</li>
<li>Works with WordPress galleries</li>
<li>Works with WordPress captioned images</li>
<li>Control when to exclude / include FooBox JS & CSS assets</li>
</ul>
Includes a 7-day free trial of FooBox Pro Lightbox!
You can try the PRO version for free for 7 days.
<a href="https://fooplugins.com/foobox/?utm_source=fooboxfreeplugin&utm_medium=fooboxfreeprolink&utm_campaign=foobox_free_wprepo" rel="nofollow ugc">FooBox PRO</a> Features:
<ul>
<li>Social sharing (10+ networks)</li>
<li>Video lightbox support</li>
<li>HTML lightbox support</li>
<li>iFrame support</li>
<li>Deeplinking</li>
<li>Fullscreen and slideshow modes</li>
<li>Glass lightbox theme (including custom color pickers)</li>
<li>Metro lightbox theme</li>
<li>Flat lightbox theme</li>
<li>5 color schemes, 12 button icons and 11 loader icons</li>
<li>12 animation effects</li>
<li>85+ settings to customize</li>
</ul>
<a href="https://fooplugins.com/foobox/?utm_source=fooboxfreeplugin&utm_medium=fooboxfreeprolink&utm_campaign=foobox_free_wprepo" rel="nofollow ugc">FooBox PRO</a> Works With:
<ul>
<li><a href="https://fooplugins.com/foogallery-wordpress-gallery-plugin/" rel="nofollow ugc">The Best Image Gallery Plugin for WordPress</a></li>
<li>NextGen</li>
<li><a href="https://codecanyon.net/item/justified-image-grid-premium-wordpress-gallery/2594251" rel="nofollow ugc">Justified Image Grid</a></li>
<li>Envira Gallery</li>
<li>WooCommerce product images (Works with WooCommerce v3+)</li>
<li>JetPack Tiled Gallery</li>
<li>AutOptimize</li>
</ul>
Check out the <a href="https://fooplugins.com/foobox-feature-comparison/?utm_source=fooboxfreeplugin&utm_medium=fooboxcomparelink&utm_campaign=foobox_free_wprepo" rel="nofollow ugc">full feature comparison</a>.
Complete FooBox Asset Control
By default, FooBox lightbox includes javascript and stylesheet assets into all your pages. We do this, because we do not know if the page content contains media or not. 
If you want more control over when FooBox assets are included, you can now exclude the assets by default, by enabling a setting. Then on each page, you can choose to include them when required. 
Alternatively, you can leave the setting disabled, and then choose to exclude the FooBox assets from particular pages. A new metabox is now available when editing your pages or posts. 
This new feature was only available in the PRO version beforehand, but we feel control over your website performance is something you should not have to pay for. Enjoy!
Translations
<ul>
<li><a href="https://www.webhostinghub.com/" rel="nofollow ugc">Serbo-Croatian by Borisa Djuraskovic</a></li>
</ul>

Lightbox & Modal Popup WordPress Plugin – FooBox


it´s easy to get going right after the install! not too complex as I am needing it for "single" images to lightbox! really excellent!!!!!!


wonderful!

stops working after 7 days


FooBox works great ouf of the box (pun intended) and is well-suited for sites that need a quick image lightbox plugin that plays well with others.



The default lightbox theme provided is professionally made and well-suited for showcasing screenshots, portfolio items, photography, and more.



If you need more layout choices and compatibility with even the peskiest lightbox plugins, please check out Pro, as it's the only license I don't hesitate to renew.


FooBox is fantastic

A responsive image lightbox for WordPress galleries, WordPress attachments & FooGallery

ReformBox vs Lightbox & Modal Popup WordPress Plugin – FooBox