Amit Kumar Singh

wpoets

Aim of this plugin was to create a simple lightbox, to be used with the images on the post, it helps you add your images as you do now, it will take care of rest of the things. It works transparently without adding any extra work on your part.
For more information check out the <a href="http://amiworks.co.in/talk/akwplightbox/" title="akWPLightbox : simple lightbox for wordpress" rel="nofollow ugc">plugin homepage</a>.
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akWPLightbox

It makes all the image in a post that are linked to larger images, to open with lightbox effect.

damiroquai

Simple Fancybox for WordPress image gallery. Works for both, shortcode gallery in classic editor and Gutenberg blocks. Install and activate, nothing else to set up here. Fancybox will work for WordPress galleries. Only important thing is to set link to file, we don’t want to open attachment page. By default, the plugin will use jQuery to apply FancyBox to any thumbnails that link directly to an image.
Fancybox includes support for touch gestures and even supports pinch gestures for zooming. It is perfectly suited for both mobile and desktop browsers.
Fancybox has been tested in following browsers/devices:
<ul>
<li>Chrome</li>
<li>Firefox</li>
<li>IE10/11</li>
<li>Edge</li>
<li>iOS Safari</li>
<li>Android 7.0 Tablet</li>
</ul>
<a href="https://wordpress.transformnews.com/plugins/simple-fancybox-1437" rel="nofollow ugc">Plugin Home + Demo URL</a>
Original fancybox script is licensed under the GPLv3 license for all open source applications. A commercial license is required for all commercial applications (including sites, themes and apps you plan to sell).

Simple Fancybox

Plugin will integrate Fancybox, the world’s most popular lightbox script.

akWPLightbox vs Simple Fancybox