Does Firefox Sync also sync cookies?

Which one of the many options activates this: Open Tabs, Bookmarks, Logins, History, Add-ons, or Preferences?

  • None, of those options, would sync cookies.
    – Ramhound
    Jan 29, 2018 at 16:38
  • @Ramhound "None, of those options, would sync cookies." --- So sync does not sync cookies? (This is what I want to know.)
    – Daniel
    Jan 29, 2018 at 16:47
  • 1
    "Which of the many options† activates this?" - The options you listed would not include cookies.
    – Ramhound
    Jan 29, 2018 at 19:29

3 Answers 3


It looks like the official answer is "no."

There is a long-standing Bugzilla report asking them to enable this capability. Based upon the subsequent discussions within that page, trying to sync cookies would be problematic:

Richard Newman [:rnewman]
It could be done, but I doubt we'd want to support it.

why not? would be useful for many people. when its a problem with storage space on mozilla servers ... it would okay when its only supported on own sync-servers.

Richard Newman [:rnewman]
Nothing to do with space, and everything to do with potentially destroying your browsing experience. I have little confidence in being able to reconcile simultaneous changes to your Facebook session cookie, for example. That means data loss.

Gregory Szorc [:gps]
Cookie sync is not currently on the roadmap.


Chrome has a great plugin for this, SyncMyCookie, maybe work with Chrome Store Foxified.

UPDATE: Seems worked fine to me, but I had to follow the plugin instructions to install unsigned extensions.


probably has to do with security/privacy issues... if someone know's a third party website/tool to export/sync cookies, let it now...

for firefox i'm trying "EXP Cookies" looks good so far...


You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .