TikTok: mute videos by default
Automatically mutes every playing video so the feed never surprises you with sound.
Code to copy
// Keep every TikTok video muted by default
function muteAll() {
document.querySelectorAll('video').forEach(function (v) {
if (!v.muted) { v.muted = true; }
});
}
muteAll();
const obs = new MutationObserver(muteAll);
obs.observe(document.documentElement, { childList: true, subtree: true });
document.addEventListener('play', function (e) {
if (e.target && e.target.tagName === 'VIDEO') { e.target.muted = true; }
}, true);How to use this example
- Copy the code with the button above.
- Install JustZix (2 minutes) and open the extension on the target page.
- Add a new rule matching that page.
- Paste the code into the rule's JavaScript panel and save — it runs on every page visit.
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