How to Mute Everything in Mozilla Firefox Browser

If you are working in your office where you have to share the work space with your colleagues, then you have to make sure that you do not disturb each other unnecessarily. For example, in my work place they advise us to put the mobile phones on the vibrate mode so when someone receives a call nobody gets distracted from the work. In such an environment, it is also essential that you keep the sounds coming from your PC to a minimum. This is a little difficult these days because some sites start playing promotional videos as soon as you open them. But if you are using the Firefox web browser then you can actually mute everything including the videos and other media files embedded inside various web pages.

Here is how you can mute all types of media in the Firefox browser:

  1. Open Firefox browser, type about:config in the address bar and press Enter.
  2. You will be shown a warning message, but lick on the button that reads I’ll be careful, I promise to proceed.
  3. Type muted in the search box to find the setting we are looking for.Firefox Mute Everything
  4. Locate a setting named dom.audiochannel.mutedByDefault and double-click on it to toggle its value to true.
  5. Now if you open a new tab and try to access any website that plays audio, you will hear nothing as everything will be muted by default.

This method is useful if you do not want to disturb anyone in a shared place like in the library, classroom, meeting room or the work place, while at the same time want to be able to access any site even the ones loaded with all kinds of media content. And you can easily reverse the setting to its default state too – just find the same setting and double-click on it to switch it back to assign the false value.