Assume you having like me a bunch of photos in different folders. You taking care about backups and plus you need somehow to keep it synchronized with those software that publish photos online that need care like to be setup, update and uploads... or in a few words - a bunch of extra time just to be able to publish your photos.
In case of abandoned software you need to search again, test it and repeat again to upload, synchronize again. Updating, patching, constantly keep looking for vulnerabilities... if you hearing me that try this one
The only software that allows to publish real content of existing photos without hassle of managing online copy - it is Single File PHP Gallery.
All you need - is to drop this file to directory with bunch of sub-folders with photos/videos and point to this directory web server. That is it. You managing your photo files as usually by any of your favorable file manager - by adding, deleting, editing or renaming them and "Single File PHP Gallery" will take care to show your media online.
Thanks a lot Mr. Svalgaard !