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JavaScript Media facebook.com

Facebook: mute autoplaying videos

Makes sure every video that autoplays in the feed always stays muted.

Code to copy

// Force every autoplaying feed video to stay muted
function muteVideos() {
  document.querySelectorAll('video').forEach(function (v) {
    if (!v.muted) { v.muted = true; }
    v.setAttribute('muted', '');
    v.volume = 0;
  });
}
muteVideos();
new MutationObserver(muteVideos).observe(document.body, { childList: true, subtree: true });
document.addEventListener('play', muteVideos, true);

How to use this example

  1. Copy the code with the button above.
  2. Install JustZix (2 minutes) and open the extension on the target page.
  3. Add a new rule matching that page.
  4. Paste the code into the rule's JavaScript panel and save — it runs on every page visit.

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