VeXell

Simple attachment widget that uses native WordPress upload manager to add files link widgets to your site.
<ul>
<li>Title and Description</li>
<li>Attach Existing Files</li>
<li>Upload New files</li>
<li>Sort files</li>
</ul>
<h3>Documentation</h3>
Press “Add attachment” button. Upload or choose exists file. Add title or description for file. Press “Insert Into Widget”. 
To remove attachment press “x” link.
At any post or page you can use shortcode [widget_attachments] to display widget content. 
Available params: 
 id – Widget ID (You can see at widget) 
 limit – How many items can be showed
Example: [widget_attachments id=”3″ limit=5] It will show 5 attached files from Widget ID equal 3;

Attach Files Widget

Simple attachment widget that uses native Wordpress upload manager to add files link widgets to your site.

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.

Attach Files Widget vs Lightbox with PhotoSwipe