This add-on used to work great, but like many similar extensions, it hasn’t been keeping up with YouTube’s recent changes — hover previews are back to autoplaying non-stop for me.

Just switched to a brand-new userscript that’s only ~2 weeks old and already has flawless 5-star reviews:
→ Search GreasyFork for “YouTube - Block Autoplay Preview Thumbnail & Channel Trailer”
→ Install it with Tampermonkey or Violentmonkey (both available on Firefox too).

What I love about this script:
• 100% blocks thumbnail hover previews + channel trailers
• Updates come lightning-fast whenever YouTube breaks something
• Zero background permissions, way lighter than any extension
• Works perfectly on Firefox too

Made the switch a few days ago and my YouTube homepage finally feels peaceful again. If you’re annoyed by autoplaying thumbnails, this little script is currently the best fix out there — highly recommend giving it a shot! 🚀

Thank you! Auto adding videos I didn't watch to my history was driving me crazy!

Does exactly what it says it does. No more autoplaying previews. Nice and clean look, 10/10 extension

Seems to work fine, very helpful, thanx!