Shortcut: Merge windows in Firefox

Ever had more than one Firefox windows open, with tabs and ideas scattered all over the place? What a mess! The good news: it’s easy to fix. You’ll need the Tab Mix Plus extension.

Ctrl + Shift + M

will join all open windows into a single one. This behavior is configurable in Tools > Tab Mix Plus Options > Tab Merging.

Having the option to detach / reattach a single tab would also be useful, but I couldn’t find a quick way to do it, except manually copying the URL and pasting it into a new window.

12 Responses to Shortcut: Merge windows in Firefox

  1. sks says:

    Thank you!

  2. Jay Ragsdale says:

    I hope they make this a standard feature soon so I don’t have to download this tool to each of my machines individually. TMP is great though. Thanks!

  3. deathgleaner says:

    Are you sure that you need the Extension?

  4. Constantin says:

    Things might have changed since this note was written, and it seems like Firefox 3.5 without the extension does not react to the shortcut.

  5. internetexplorer says:

    to detach a tab and open it in a new window, just drag it down out of the tab row and into the windows below. I don’t know what version you have, but mine is FF 3.6

  6. Doesn’t work on a Mac.

  7. Ben says:

    Thanks for this tip. Wicked! Saw this feature first in Safari and love it. But I can’t live without FF.

  8. Doesn’t work for me. It doesn’t merge a ‘tabless’ window. Do you know how? In , I want to merge the audio player which is a pop up window. It doesnt have a tab, when i ctrl+shift+m , it says ‘you have to have at least 2 separate windows. Help?

  9. Clint Pachl says:

    I just faced this problem and started Googling for a “native” solution, with no avail. However, I came up with a hack!

    1) Open a new tab (dummy tab) in the tab-less window, which will now display two tabs (that’s the hack).

    2) You can now simply drag and drop the desired tab onto a group of tabs in the target window.

    3) Close the dummy tab, thus it’s parent window.

    This is really a workaround because I have the preference “Always show the tab bar” deselected. If you’re quick with shortcuts (Ctrl+T, Ctrl+W, Alt+Tab), this works well. Plus, it doesn’t require an extension, which satisfies my “native solution!”

  10. Great post. Unfortunately in the newest version of FIREFOX (v. 15, as of 10/11/2012) this shortcut no longer works. It is being overridden by a Web Development feature native in FireFox that shows you what the page looks like in several different sizes (i.e.: it simulates ipad, android phone, and resolutions for other common screen sizes). A useful tool, but unfortunately, at the expense of WINDOW/TAB MERGING.

    Also, Google Chrome has an add-on with a horseshoe emblem which will merge all tabs, but that company has not made an equivalent for FF.

    Every Google search I’ve done for the the tab/window merge feature leads to one solution: TabMixPlus … Unfortunately, they have not released a fix for this, nor do they seem to care that much, based on posts I’ve seen from other users.

    It was a nice feature and there is no workaround.

    ….. R.I.P. ….


    – CodeSlayer2010

  11. Kizzle says:

    According to their add-on site on Mozilla, they have an update slated for January 2013, so just over a month and a half. Hopefully they’ll fix the window merge issue. You can have a glance here:

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