On Google Chrome, I installed this extension without any problems. I connected to Google Disc and the corresponding file appeared. Unfortunately, importing the profile into Firefox always fails. I deleted all profiles and wanted to reverse the situation. First I wanted to create a profile on Firefox. When logging into my Google account, an error always appeared.
Of course, other extensions or other logins from Firefox to Google account do not end in any error.
I really needed this type of bookmarks synchronizer but it doesn't work for me. I am very sorry, the extension does not meet my expectations. And please do not write in the comments that it is something wrong with me, or that I am too weak, too stupid to manage. It does not work and it should work without any problems. I expect problem-free operation from extensions. Then I make a donation.

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Works very well. I'm using it for syncing with my NextCloud instance. Thank you!

Excel·lent eina per a sincronitzar marcadors/favorits entre dispositius (mòbil, raspberry pi, ordinador...).

També sincronitza amb Bookmarks per a NextCloud.

Extremely useful add-on, especially since it's able to sync with a git repo.

Excellent moyen de synchronisation des signets. Universel sur tous navigateur sur desktop et mobile. Fonctionne très bien sur un serveur nextcloud.

This is in my opinion the most privacy friendly bookmark syncing method. It is very easy to set up; you only need to install the nextcloud app and point the extension to it.

Needed a bit of work to set it up but works great (Firefox on Windows and Linux)/

Muy buena app, fácil de usar y sin muchas complicaciones. Aparte de ser de código abierto

Cette application est incroyable... depuis des années je cherchais un moyen de synchroniser mes bookmarks entre tous mes machines et les différents browsers edge, firefox, chrome c'est enfin chose faite. Dommage que les limitations d'apple ne permettent pas à l'extension de gérer directement les bookmark safari sur IOS. L'appli sur IOS dépanne toutefois, après sur mes mobiles je n'ai jamais vraiment géré les bookmarks.

Great!