Dominik Probst

One Click Lightbox adds a beautiful and totally free Lightbox to your site to enhance the appearance of your images. 
Just activate the Plugin and add a Link to the Media File to all your images and you’re done!
One Click Lightbox works with .jpg, .jpeg, .png, .bmp and .gif! 
The width and height of the Lightbox resizes automatically for each image.
If you want more than that, you can just edit the settings on the settings page: 
* Edit the transparency of the page surrounding the Lightbox 
* Automatically add the Lightbox attribute to all anchors which are pointing to image files 
* Manually add the Lightbox attribute to specific images 
* Manually deactivate the Lightbox for specific images

One Click Lightbox

One Click Lightbox adds a beautiful and totally free Lightbox to your site to enhance the appearance of your images.

Arno Welzel

This plugin integrates PhotoSwipe to WordPress. All linked images in a post or page will be displayed using PhotoSwipe, regardless if they are part of a gallery or single images.
More about the original version of PhotoSwipe see here: <a href="http://photoswipe.com" rel="nofollow ugc">http://photoswipe.com</a>
You can also display EXIF data from supported image types.
As of version 4.0.0 this plugin requires at least WordPress 5.3 and PHP 7.0. Older PHP version will cause problems. In this case you have to upgrade your PHP version or ask your hoster to do so. Please note that WordPress itself also recommends at least PHP 7.4 – see <a href="https://wordpress.org/about/requirements/" rel="ugc">https://wordpress.org/about/requirements/</a>.
Please keep in mind: not the visible thumbnail is relevant, but only the image link. Images should always be linked to the file and not to the attachment page. Since version 5.6.1 there is an option to fix attachment links which can be enabled if needed – however this may slow down your website since then all links on a page will be checked if they are attachment links.

Lightbox with PhotoSwipe

Amazing lightbox plugin

Integration of PhotoSwipe (http://photoswipe.com) for WordPress.

One Click Lightbox vs Lightbox with PhotoSwipe