← All examples

Disney+: mute every background video

Keeps every video on the page muted so no sound ever catches you off guard.

Code to copy

// Keep every video on the page muted so nothing plays sound unexpectedly
function muteAll() {
  document.querySelectorAll('video').forEach(function (v) {
    if (!v.muted) { v.muted = true; }
  });
}
muteAll();
var muteObs = new MutationObserver(muteAll);
muteObs.observe(document.documentElement, { childList: true, subtree: 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.