Firefox Sync

Firefox Sync 1.6.3

Experimental add-on that syncs bookmarks and other data


  • Lets you sync bookmarks, passwords, history, tabs and user preferences
  • Great way to keep a backup copy of your bookmarks
  • Works across computers and other devices


  • Configuration options are uncomfortable
  • Beta version: use with caution


Firefox Sync is a Firefox extension that started off as a Mozilla Labs experiment and has now reached its first Beta version. It enables you to sync browser data across multiple computers and devices.

Once you install it in Firefox and create a user account, you're ready to go. Note that you can create an Firefox Sync account in the servers, but also use your own personal server if that feels safer for you.

Firefox Sync lets you easily synchronize browser data between multiple instances of Firefox installed on different computers or mobile devices. You can choose which elements you want to sync (among bookmarks, history, tabs, passwords and user preferences) and also in which way they should be synced – that is, merging data between your local computer and the server, from your local computer to the server, or vice versa.

Firefox Sync is great not only to maintain all your bookmarks and other data updated between different instances of Firefox, but also to keep a backup copy in case something goes wrong with your browser.

On the downside, Firefox Sync's configuration options are not easy to tweak. For instance, if you want to change the syncing method, you need to log out and log in to the server again. You need to be aware of this, because otherwise you may overwrite the data server with an unwanted local copy.

Firefox Sync is a useful Firefox extension that lets you sync bookmarks, passwords, tabs, user preferences and browsing history between different computers.

(1.6.2) Fix bookmark reordering and duplication issues on upgrade (1.6.2) Fix history and form sync compatibility issues


  • (1.6.2) Fix bookmark reordering and duplication issues on upgrade (1.6.2) Fix history and form sync compatibility issues
Firefox Sync


Firefox Sync 1.6.3

User reviews about Firefox Sync

  • by Anonymous

    Firefox Sync deleted all of my 500+ bookmarks after re-install of computer. I thought it was suppose to...   More