Here are some articles on that: '''(1) Bookmarks''' There are two available formats: "JSON" data file: this is slightly more complete for restoring in Firefox. See the "Manual Backup" section of this article: [[Restore bookmarks from backup or move them to another computer]]. "HTML" file: this is the classic format all browsers read, but when re-imported into Firefox, it might not restore the exact structure. See: [[Export Firefox bookmarks to an HTML file to back up or transfer bookmarks]]. '''(2) Saved Logins''' See: [[Export login data from Firefox]].