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Mozilla says that with Firefox Sync if you are working on one computer with 5 tabs open you can then switch to another computer or device and Sync can or will update the second computer with those tabs. How do I do this?

BACKGROUND
I have setup Firefox Sync on both devices and they have been synced. How do you sync them again? Is it automatically syncing them in the background? How often? How do you sync the tabs? Are the passwords synced?

Documentation
The documentation below describes how to add another device or computer to Sync. It says that when you add the device it syncs it. But it doesn't describe how and when it keeps it in sync or how to sync the tabs.
[1] http://support.mozilla.org/en-US/kb/what-firefox-sync

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  • 3
    Is there anyway to have the tabs automatically appear in all of your browsers? I don't want to retrieve the tabs from my other computers, I just went the same set of tabs on all my computers at the same time. Jun 23, 2012 at 5:26
  • Something like a checkbox to "Keep tabs synced across devices"? I don't think you can but that would be nice! Jun 23, 2012 at 19:58
  • I think XMarks might be able to do what I want via "open tab sync" Jun 25, 2012 at 1:24
  • I think Chrome added something like this recently... Jun 25, 2012 at 7:56
  • I think the Chrome one only allows you to access tabs from other machines in a list, rather than actually open those tabs on your other machines for you. Jun 27, 2012 at 4:23

7 Answers 7

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2018-05-10 Update:

see this article https://support.mozilla.org/en-US/kb/view-synced-tabs-other-devices enter image description here

It seems like, you can't see it without logging in now.


The following method no longer works.

Bookmark the following

about:sync-tabs

and use it. Since UI elements have gone as mentioned above and it is only accessible by shortcut (Alt+S+T) or toolbar menu (History>Tabs from other devices)

Tabs from other computers

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  • Firefox only shows that the address does not appear to be correct.
    – Tigerware
    May 9, 2018 at 17:37
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Update! Mozilla has removed all traces of it!!! It's removed. The following doesn't work anymore...

How to get or show tabs from another computer
In the upper right corner of the browser (Mac OSX, FF10) there is a "List all tabs" dropdown button. It's small and hard to notice without looking for it. Clicking this shows a pop up menu with "Tabs from other computers" (it also contains Tab Groups). Selecting this option shows a new page that has a list of tabs from another computer. Note: I don't remember seeing that option until I clicked the Sync button. I'm not sure tho.

How to sync
• Tools > Sync Now
• You can also right click on the toolbars > select Customize and add the "Sync" button. Hovering over this button shows the last sync time.

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  • BTW I can't find this button dropdown now??!? The I see a button in that location that when hovered over it says, "Tab groups". What happened to this button Mozilla??? Jun 23, 2012 at 20:00
  • Also, there is a "Tabs from other groups" that is grayed out under the History menu item. I don't think they want us to use this feature? (frustrating) Jun 23, 2012 at 20:12
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It's Nov, 2021, and all of the answers here are a bit old. I just struggled through this, and thought I'd share what I learned:

Preliminaries:

Make sure you've got your "Settings" for Sync correctly set up - in this case that Open Tabs are enabled, and you're properly signed in to the same account on both/all computers.

Firefox has a native Sidebar Button. If it's not installed on the "Target computer" (explained below), follow this procedure to install it in Firefox.

I'll call the two computers involved the "Source computer", and the "Target computer". The computer that currently has the open tabs is the "Source computer"; the computer that is to receive the tabs is the "Target computer".

Instantly Opening Sync'd Tabs on "Target" Computer:

  • Click the Sidebar Button on the "Target" to show the Sidebar in the active FF Window. It can be clicked again to hide the Sidebar.

  • At the top of the Sidebar, click the drop-down, and select Synced Tabs. This will reveal a list of potential "Source" computers & devices, and beneath each a list of Synced Tabs on that Target. From this point you have several options, most of which will be obvious on inspection:

    1. You can right-click individual tabs in the "Source" listing in the Sidebar to open it on your "Target" computer,
    2. you can search the tabs listed in the Sidebar, and Select All tabs for opening on the target computer, or
    3. you can select a computer/device in the Sidebar list (perhaps with many open tabs), right-click that computer, and choose the Open All In Tabs item in the menu to open all tabs on the "Source" computer in the "Target" computer.

Any feedback is appreciated as it's possible I've failed to cover a step - perhaps due to settings made previously.

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    I have no access to the other sources anymore.
    – SalahAdDin
    Jun 4 at 20:56
  • @SalahAdDin: Thanks for the feedback, but I cannot replicate your error - actually not sure I understand it. If you want to post a proper question here, I'll try to help you get this sorted. All I can say for now is that it still works on FF 101.0.
    – Seamus
    Jun 4 at 21:04
  • I have no access to the other devices I had my tabs, and from the current one, i can't see the Open All In Tabs option, so, I can't open the synced tabs.
    – SalahAdDin
    Jun 5 at 12:28
  • @SalahAdDin: Oh... that's a different question. Pls note the question here was to sync tabs between computers... meaning computers that you actually have access to.
    – Seamus
    Jun 6 at 0:52
  • Should I open a new question?
    – SalahAdDin
    Jun 6 at 11:19
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In about:config set services.sync.sendTabToDevice.enabled to true. Then right-click on the tab you want to send to another device and use the new "Send Tab to Device" option.

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  • As of Firefox 52, this seems to be enabled by default.
    – jnv
    Mar 20, 2017 at 12:27
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Go to the Firefox menu on the right of the navigation bar. It looks like three horizontal lines. Clicking on it will open a drop-down menu, which has a "Customize" option (left bottom). This option takes you to an interactive editor of the Firefox user interface, where you can easily add or remove buttons by drag & drop. Customize your Firefox to show the Synced Tabs button wherever you like:

enter image description here

You can put the button to the navigation bar or to the menu, it's up to you. The Synced Tabs button opens a list of tabs from other devices.

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  • How do you do that? I see a picture but no instructions.
    – SDsolar
    May 28, 2017 at 14:40
  • Good point, I'll update the answer. May 29, 2017 at 9:37
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Wow. Looks like it is now buried in the history menu from the menu bar ONLY!! Not the history pane, not the tab menu, ...

To temporarily open the menu bar if it is hidden, press "Alt"

Using FF 15 Win

-3

I guess you missed a part of the article you just pointed to..

enter image description here

Check those links out. They explain everything.

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    Hi Bibhas - That sets up sync and then sets up another device but that doesn't answer how to do anything else after they are setup such as the original question describes. Feb 6, 2012 at 22:39

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