Noor Alam

<a href="https://noorsplugin.com/wordpress-colorbox-plugin/" rel="nofollow ugc">WP Colorbox</a> plugin is a simple lightbox tool for WordPress. It allows users to pop up content in lightbox using the popular jQuery ColorBox library. They can also view the larger version of a particular media file without leaving the page.
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/2osxJcPTS1E?version=3&rel=0&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
<h4>Features</h4>
<ul>
<li>Beautiful lightbox popup style</li>
<li>Flexiblity of creating your own lightbox link</li>
<li>Pop up custom/HTML content in lightbox</li>
<li>Trigger lightbox from either a text/image link</li>
<li>Add lightbox to a YouTube or Vimeo video link</li>
<li>Enable lightbox functionality on your site which supports modern browsers</li>
<li>Use a simple shortcode to pop up a media file in lightbox</li>
<li>Apply lightbox effect on images inserted into WordPress post/page</li>
<li>Open external page in lightbox using iframe</li>
<li>Responsive lightbox popup which works on mobile devices. Also it fits perfectly on smaller screens.</li>
</ul>
<h4>How to Use WP Colorbox</h4>
Pop up image in lightbox
Create a new post/page and use the following shortcode to create a text/image link which will trigger lightbox once clicked:
<pre><code>[wp_colorbox_media url="https://example.com/wp-content/uploads/images/overlay.jpg" type="image" hyperlink="click here to pop up image"]
</code></pre>
here, url is the link to the media file that you wish to open in lightbox and hyperlink is the anchor text/image.
<pre><code>[wp_colorbox_media url="https://example.com/wp-content/uploads/images/overlay.jpg" type="image" hyperlink="http://example.com/wp-content/uploads/images/thumb.jpg"]
</code></pre>
Pop up YouTube video in lightbox
<pre><code>[wp_colorbox_media url="https://www.youtube.com/embed/nmp3Ra3Yj24" type="youtube" hyperlink="click here to pop up youtube video"]
</code></pre>
Pop up Vimeo video in lightbox
<pre><code>[wp_colorbox_media url="https://www.youtube.com/embed/1284237" type="vimeo" hyperlink="click here to pop up vimeo video"]
</code></pre>
Specify an Alternate Text for an Image
<pre><code>[wp_colorbox_media url="https://example.com/wp-content/uploads/images/overlay.jpg" title="overlay image" type="image" hyperlink="http://example.com/wp-content/uploads/images/thumb.jpg" alt="Thumbnail image description"]
</code></pre>
Apply Custom CSS
You can specify your own CSS class in the shortcode to customize a text/image link.
<pre><code>[wp_colorbox_media url="https://www.youtube.com/embed/nmp3Ra3Yj24" type="youtube" hyperlink="click here to pop up youtube video" class="custom_class"]
</code></pre>
Multiple CSS classes can be separated with a space. For example:
<pre><code>[wp_colorbox_media url="https://www.youtube.com/embed/nmp3Ra3Yj24" type="youtube" hyperlink="click here to pop up youtube video" class="custom_class custom_class2"]
</code></pre>
For detailed documentation please visit the <a href="https://noorsplugin.com/wordpress-colorbox-plugin/" rel="nofollow ugc">WordPress Colorbox</a> plugin page

WP Colorbox

Having to go to a website to see how to use this should be a huge no-no. Will not recommend this plugin to anyone.

Missing in-plugin documentation

View image, video (YouTube, Vimeo), page, inline HTML, custom content in lightbox. Add jQuery Colorbox lightbox effect to your WordPress site.

Ryan Hellyer

Adds a very simple Colorbox to your linked images. This plugin is intended as an easy to use alternative to other lightbox / Colorbox 
alternatives. Unlike most other plugins with similar functionality, this one does not have any settings or requirements whatsoever, 
simple install, activate and yer done 🙂
More information can be found on the <a href="https://geek.hellyer.kiwi/products/simple-colorbox/" rel="nofollow ugc">Simple Colorbox plugin page</a>.
<h3>Credits</h3>
Thanks to the following (in no particular order) for help with the development of this plugin: 
* <a href="http://t.co/hCpn8iLgFo" rel="nofollow ugc">Milan Dinić</a> – Added extensive upgrade patch for increasing extensibility 
* <a href="http://arnsteinlarsen.no/" rel="nofollow ugc">Arnstein Larsen</a> – Motivated me to add slideshow support 
* <a href="http://utkar.sh/" rel="nofollow ugc">Utkarsh</a> – Assistance with jQuery bug 
* <a href="http://ronalfy.com/" rel="nofollow ugc">Ronalfy</a> – Suggested I use Colorbox

Simple Colorbox

Description: Adds a very simple Colorbox to your linked images.

WP Colorbox vs Simple Colorbox