PostGallery

Adds a gallery to every post with customizable templates, drag′n′drop upload und simple to use.
It also provides a customizable elementor-widget.

It comes with a fullscreen-litebox-gallery and also an easy to use slider-configurator.

It can group media, to better find your images.

You can find the documentation on
http://post-gallery.rtfd.org

You can help to develop on
https://github.com/RTO-Websites/post-gallery