It only has offline support. On Linux the configuration is a mess. Sometimes It doesn't talk with my desktop app. Remote support should also be added, so 1 star. I also noticed this while using it: not everything is handled within the browser. When the master password is requested, It switches to the KeepassXC desktop window which makes the experience less convenient. MasterPassword could instead be entered through a small pop-up inside the browser. This is what I would have preferred.