Backup data From passwords to bookmarks, discover ways to back up your important data. In English How do I set up Sync on my computer? Back up and restore information in Firefox profiles Export Firefox bookmarks to an HTML file to back up or transfer bookmarks Restore bookmarks from backup or move them to another computer Sync Firefox data Recovering important data from an old profile How do I choose what information to sync on Firefox? Back up and transfer your Firefox data to a new device Export login data from Firefox Back up your Firefox installation folder