Be extremely careful with this add-on. It worked great for about a week. However, when I woke up this morning, ALL of my bookmarks have been permanently deleted (was using this with Nextcloud). Folder structure was preserved but all bookmarks are just gone.

Thankfully, I have backups of all my bookmarks across the machines I was using this on. Will only have permanently lost a few things that I can recover.

If you really must use this add-on, make sure you BACKUP everything and make periodic local backups. I have no idea why it did this, there is almost no logging either in the floccus add-on or on Nextcloud. The documentation and support for this is pretty poor (though I do understand that it is maintained mostly by one person). I would highly recommend using something else, since this type of error is completely unacceptable for an app like this.

Maybe it works better if you self host or use only local options? I don't care to risk it again at this point.