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I am essentially asking for a Firefox equivalent to the Chrome extension called MuteTab - a way to identify which tabs are making sounds and then mute them accordingly.

Is there a such extension for Firefox? Any other ideas?

This would be especially helpful with websites that sit in the background and then sneak up on you and start making sounds, like with ads. You would have to go through all 100 tabs to find the guilty one and terminate it.

I have noticed that the forum section at Tom's Hardware can start playing embedded videos and make disturbing sound this way when you are not currently viewing tab it's on, even though you have not refreshed the page (although it looks like they automatically refresh the page for you after a given time).

Flashmute and Flashblock are mentioned as alternatives. But they don't really work the same way as MuteTab. Even Mozillazine mentions these tools for in-browser muting of tabs. Trying to download Flashmute only results in Cannot GET /flashmute.aspx. I don't think it's maintained anymore. And Flashblock completely blocks Flash content.


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I guess we will have to wait another 3 years or so until the Firefox team decides this feature is necessary, or until someone makes a MuteTab equivalent for Firefox. If you know of any such project or finished but maybe not officially released add-on for Firefox please let me know. Another option is to switch to Chrome or just use Chrome for multi-tabbed browsing. –  sammyg Jan 10 '13 at 15:02
I guess there is some technical difficulty: ghacks.net/2014/01/15/… –  huggie Jun 23 '14 at 2:50
Google Chrome shows it automatically. –  kenorb May 25 at 11:56

3 Answers 3

I would suggest avoiding the issue altogether by preventing video/music from automatically playing. Here are three things you can do (together or separately) to help prevent auto playing video/sound.

  1. Install AdBlock Plus, which will block most advertisements including those that automatically start playing video/sound.

  2. Go to about:config and set media.autoplay.enabled to false. This supposedly stops HTML5 media from autoplaying, though I couldn't find any references to it in the about:config entries on MozillaZine Knowledge Base.

  3. Go to about:config and set plugins.click_to_play to true. As you can see, it stopped Youtube from auto-playing this annoying video.

    I got 99 problems, but a Bieber ain't one

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It doesn't stop JavaScript from autoplaying something. –  Sarge Borsch Mar 17 at 5:22
+1 for Justin Bieber joke :D –  redbeam_ May 25 at 13:11

Track https://bugzilla.mozilla.org/show_bug.cgi?id=486262 for Firefox's response.
Also see http://blog.ffextensionguru.com/2014/01/31/why-firefox-wont-have-a-noisy-tabs-feature/ for an opinion on why this may never happen.
https://addons.mozilla.org/en-US/firefox/addon/click-to-play-per-element/ is a little add-on that can be helpful in avoiding the surprise-sound tab issue.

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You can now download the Muter add-on (currently for PC only). Once installed it adds a mute button into the add-on bar in the lower right corner. For Chrome use extension MuteTab.

See: Which Tab In Firefox is Playing Sound?

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That sounds like a good workaround, but I can't see this in the link. All I can see is a mention of a way to stop autoplay, and a mute button for the browser. –  Sparhawk Sep 6 '13 at 2:04
Unfortunately, that's not what it does. Unless I'm missing something, it mutes Firefox altogether, including the tab that is in focus, and there's no way to change that. That's not very helpful, it just gives you the minor convenience of using a button in the browser instead of muting Firefox or Flash in sound mixer. If you actually want to hear the sound from the current tab, without having other tabs talking over it, this doesn't help. –  Adi Inbar Apr 6 at 21:34

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