Arya Dhiratara

Automatically adds Lightbox functionality to images displayed by WordPress (Gutenberg) Gallery and Image Blocks, as well as GenerateBlocks Image Blocks, and also videos created by the core Video Block, using the FSlightbox library.
This lightweight plugin will automatically adds Lightbox functionality to all images displayed by
<ul>
<li>the Core Gallery Block,</li>
<li>the Core Image Block,</li>
<li>GenerateBlocks Image Block,</li>
</ul>
and videos displayed by
<ul>
<li>the core Video Block</li>
</ul>
without the needs to set each gallery/image and video link to the media file so you don’t need to set them manually one by one.
Note: You can exclude specific image/video from getting the lightbox functionality by adding <code>no-lightbox</code> class to the image/video element.
<h3>About The Plugin</h3>
<ul>
<li>
This plugin has no settings (you can customized the default configuration using filters), hence does not add any data to the database, so you don’t need to worry about ‘database leftovers’ if you deactivate the plugin.
</li>
<li>
This plugin will automatically add the wrapper link with the necessary attribute on each image and videos that uses the blocks mentioned above to add the lightbox functionality using a few lines of inline script. So it will not make any changes to your original image and video tags (if you check from the page’s HTML source), and will not add extra weight / DOM depth to your page’s HTML.
</li>
<li>
By default, this plugin only works with the native WordPress Gallery, Image, and Video Blocks, as well as GenerateBlocks Image Blocks. You can add additional selectors using filters to make this functionality also works with other image/video blocks. If you need to, send me a request to have your image/video block included by default.
</li>
<li>
This plugin will only enqueued its assets (1 JS file) to pages/posts that use blocks, and will not enqueue assets if the page/post doesn’t use one of them.
</li>
<li>
I provided simple hover CSS which are not enabled by default. You can enable it using filter (see below).
</li>
</ul>
<h3>To add other image/video block:</h3>
Add the CSS class uses by the image/video block element, e.g:
<pre><code>add_filter( 'use_lightbox_in', function($use_lightbox_in) {
 return $use_lightbox_in . ',.your-other-plugin-block-image-parent-element img, .your-other-plugin-image-class';
} );
</code></pre>
Add the block info/name so that this plugin will enqueued the FSlightbox JavaScripts if the block is use in a post/page, e.g:
<pre><code>add_filter( 'use_lightbox_if', function($use_lightbox_if) {
 return $use_lightbox_if . '|| has_block( "kadence/advancedgallery" ) || has_block( "your-plugin-block-name/the-block-name" )';
} );
</code></pre>
<h3>To only enable Lightbox Functionality on certain page/post types:</h3>
Simply use the <code>wp_dequeue</code> function**, e.g.:
<pre><code>add_action( 'wp_enqueue_scripts', function() {
 if ( ! is_singular('post') ) { // only enable in single post type
 wp_dequeue_script( 'image-video-lightbox' );
 }
});
</code></pre>
<h3>To only enable simple hover CSS:</h3>
<pre><code>add_filter('use_lightbox_css', function () {
 return true;
});
</code></pre>
<h3>Why using FSlightbox?</h3>
<ul>
<li><a href="https://github.com/banthagroup/fslightbox" rel="nofollow ugc">FSlightbox</a> is Vanilla Javascript Lightbox Library written in pure JavaScript without jQuery or any other additional dependencies. It’s lightweight (around 9kb *gzip)! 
 </li>
<li>The JavaScript is delayable (*yes, it’s important for me). This is the only lightbox library I found that works when the JavaScript is delayed.</li>
</ul>
 
<h3>My other Plugins:</h3>
<ul>
<li>
<a href="https://wordpress.org/plugins/optimize-more/" rel="ugc">Optimize More!</a> – A DIY WordPress Page Speed Optimization Pack. Features:
<ul>
<li>Load CSS Asynchronously – selectively load CSS file(s) asynchronously on selected post/page types.</li>
<li>Delay CSS and JS until User Interaction – selectively delay CSS/JS load until user interaction on selected post/page types.</li>
<li>Preload Critical CSS, JS, and Font Files – selectively preload critical CSS/JS/Font file(s) on selected post/page types.</li>
<li>Remove Unused CSS and JS Files – selectively remove unused CSS/JS file(s) on selected post/page types.</li>
<li>Load Gutenberg CSS conditionally – Load each CSS of the core blocks will only get enqueued when the block gets rendered on a page.</li>
<li>Advance Defer JS – hold JavaScripts load until everything else has been loaded. Adapted from the legendary varvy’s defer js method *recommended for defer loading 3rd party scripts like ads, pixels, and trackers</li>
<li>Defer JS – selectively defer loading JavaScript file(s) on selected post/page types.</li>
<li>Remove Passive Listener Warnings – Remove the “Does not use passive listeners to improve scrolling performance” warning on Google PageSpeed Insights</li>
</ul>
</li>
<li>
<a href="https://wordpress.org/plugins/lazyload-preload-and-more/" rel="ugc">Lazyload, Preload, and more!</a> – This tiny little plugin (around 14kb zipped) will automatically:
<ul>
<li>lazyload your below the fold images/iframes/videos,</li>
<li>preload your featured images,</li>
<li>and add <code>loading="eager"</code> to your featured image and all images that have <code>no-lazy</code> or <code>skip-lazy</code> class.</li>
</ul>
</li>
<li>
<a href="https://wordpress.org/plugins/shop-extra/" rel="ugc">Shop Extra</a> – A lightweight plugin to optimize your WooCommerce & Business site:
<ul>
<li>Floating WhatsApp Chat Widget (can be use without WooCommerce),</li>
<li>WhatsApp Order Button for WooCommrece,</li>
<li>Hide/Disable WooCommerce Elements,</li>
<li>WooCommerce Strings Translations,</li>
<li>and many more.</li>
</ul>
</li>
<li>
<a href="https://wordpress.org/plugins/animate-on-scroll/" rel="ugc">Animate on Scroll</a> – Animate any Elements on scroll using the popular AOS JS library simply by adding class names. This plugin helps you integrate easily with AOS JS library to add any AOS animations to WordPress. Simply add the desired AOS animation to your element class name with “aos-” prefix and the plugin will add the corresponding aos attribute to the element tag.
</li>
</ul>

Image & Video Lightbox

Automatically adds Lightbox functionality to images and videos without the need to set the link to media file manually one by one.

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.

Image & Video Lightbox vs ReformBox