It works by removing the HTML autoplay tag from web pages before.

You can use the extension to disable all HTML5 audio and video autoplaying. If you want more than MuteTab, use Disable HTML5 AutoplayДisable HTML5 Autoplay is handy, but it's more complex than MuteTab. These setting won't stop everything, though, because many sites now use HTML5 instead of Flash for video and audio. To do this, take the following steps:ДЎ) Enter 'chrome://chrome/settings/content' into the URL bar.Дў) Scroll down to the Flash heading and set it to 'Let me choose when to run plugin content.'ДЈ) Scroll further down to Unsandboxed Plugin Access and set it to: 'Ask when a site wants to use a plugin to access your computer.' You can also block some auto-play video and auto in Chrome by using its built-in settings. MuteTab makes it easy to control the audio on Chrome, Opera, and Vivaldi.

You can also set the extension to mute all tabs, background tabs, or incognito tabs by default. MuteTab makes it easy to see what tabs are talking and lets you mute all of them or just the tabs in the background. While Chrome includes the built-in ability control the sound from your tabs, it can still be a pain to track down which tab is being noisy. The Chrome extension MuteTab gives you control over audio in all your browser tabs. But, this new wave of yakety-yak ads is driving me crazy.ДЇortunately, Chrome, its relatives, and Firefox enable you to stop the noise. Even ad-blocking software, like the great open-source Ad-Block Plus, allow Acceptable Ads that don't shove their way into my face. It's almost impossible if you use Edge, Internet Explorer, or Safari. It's easy to block unwanted audio if you use Chrome, Firefox, Opera, or Vivaldi. Pop-up and pop-under ads were bad enough, but now it seems like I can hardly go to a site without having a video start up with a blaring voice braying about a great diet, deal, or the like. Are you sick and tired of opening a new web page and being greeted by a loud, obnoxious advertisement? I sure am.

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