Download Firefox Systems and Languages What's New Privacy Give Firefox a tune up Refresh Firefox How does it work? Download a fresh copy Back up your data Sync Sync your Firefox data. ទាំងអស់ All articles and threads Bookmarks Profile Sync In English Back up and transfer your Firefox data to a new device How do I set up Sync on my computer? Sync Firefox data Why can’t I use Firefox sync with my Google or Apple ID? How do I choose what information to sync on Firefox?