Firefox stores your bookmarks in a database and creates compressed backups. To create a more usable file, you can export your bookmarks to an HTML file, which is an ancient format nearly all browsers understand. More info: [[Export Firefox bookmarks to an HTML file to back up or transfer bookmarks]]. More generally, these articles describe how Firefox stores your browsing data: * [[Back up and restore information in Firefox profiles]] * [[Recovering important data from an old profile]]