If you click on a photo in a page or in a post, it will be enlarged. At the same time, you can scroll through all the pictures of that page or post 🙂
Update DEC 12, 2020
The developers of the plugin missed the switch to WordPress 5.6! So I have to use another one at the moment. Unfortunately, this does not show the captions of the pictures. And I don’t like it either. I hope my previous plugin will be adapted soon!