Great Add-on. Connected it to my Nextcloud and had an instant backup of my bookmarks/Sync to other devices. Gives you great options in terms of how/where to save the bookmarks, sync by merging Server and Client or make one override the other. Has all the options you need to make a a customized setup. Thanks!

Install was super simple. Add to Browser, Fill in Server and Login, Create a Sync task and you are set.

Had no issuses, works as intended from the first second.