Firefox Sync - Take your bookmarks, tabs and personal information with you

Revision Information
  • Revision id: 18309
  • Created:
  • Creator: gszorc
  • Comment: link to 'how secure is my data' (which isn't published yet); remove "what is my sync key" b/c users shouldn't see info about Sync Keys any more
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: Verdi
  • Is approved? No
  • Is current revision? No
  • Ready for localization: No
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Revision Content

Firefox Sync is a service that lets you synchronize your bookmarks, history, passwords and open tabs with another copy of Firefox – like one on another computer or on a mobile phone. This article briefly explains how it all works and why you'd want to use it.

What does it do?

Fire​fox ​Sync​ lets​ you ​take​ all ​your​ Fire​fox ​data​ (such​ as your​ book​mark​s, history, pass​word​s and ​open​ tabs​) with​ you wherever​ you ​go. You ​​just set up ​Fire​fox ​Sync​ on your​ home computer​ and your​ Fire​fox ​data​ will​ be securely​ stored on our ​servers ​and ​synchronized automatically from​ then​ on. Then, when you set up Firefox Sync on your work computer (or even​ your​ phone running ​Fire​fox), your​ Firefox ​data​ will be automatically synchronized​ with​ your​ home​ computer​.

Why should I use it?

Firefox Sync makes it easy to surf the Web on your PC, get up and go and have everything (open tabs, saved passwords, browsing history and bookmarks) waiting for you on your phone just the way you left it. Ever tried typing in passwords or long URLs on your phone? Now you don't have to – Firefox Sync will fill them in for you! And what's more, the sync is two-way. So if you bookmark a great new site on your work computer, Firefox Sync will make sure that bookmark shows up on your computer at home.

That's enough explanation — just show me how to use this thing

I still have questions — tell me more

Where's all my data?

Your data is safely stored on Mozilla's servers. Sync uses advanced security measures so your information can not be seen by others, even Mozilla. See How secure is my data for more.

How much of my data is synced?

Your bookmarks, passwords and history of sites visited in the last 60 days are synced with the Mozilla server. Each user is limited to a maximum of 25MB of data. 99.9% of current Firefox sync users use less than 25MB, so you are unlikely to reach the limit. If you are near the limit, Firefox will provide a warning indicating that you won't be able to sync any new data until you delete older entries. If you do need more space, you can ask for it on the Mozilla Services Account web page.

I'm having problems with Firefox Sync, what can I do?

These articles will help you solve issues with Sync: