dath

With the dGal plugin you can simply create galleries. Just upload your images, add the dGal Shortcode to your posts or pages and the gallery will appear.
Mit dem dGal Plugin kannst du ganz einfach Galerien erstellen. Einfach deine Bilder hochladen, den dGal Shortcode deinem Eintrag oder deiner Seite hinzufügen und schon ist deine Galerie fertig.
Notice 
A new version of this plugin is now available as <a href="https://wordpress.org/extend/plugins/simplegal/" rel="ugc">SimpleGal</a>.

dGal

Create an Image-Gallery in 5 simple Steps (with Lightbox-Support!) | This plugin is now available in a new version as SimpleGal.

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.

dGal vs Lightbox with PhotoSwipe