YouTube Audio by Animesh Kundu

YouTube Audio is a major overhaul and refresh, rebuilt from the ground up to do one thing beautifully: play YouTube and YouTube Music as audio only. It points the player at a direct audio stream and stops the video download at its source, so your battery and mobile data last far longer while the sound keeps playing. The native player and its controls stay exactly where you expect them.

What you get:
- Audio only, video bytes gone. Same controls, far less battery and data.
- Background and lock-screen play. Lock the phone or switch tabs and the audio carries on, with your usual OS media controls.
- Ghost mode. Ads and tracking pings are blocked before they leave your browser, quietly, by default.
- Skip the boring bits. SponsorBlock-style auto-skip past sponsor reads and off-topic intros. Only a tiny hash ever leaves your machine to look them up.
- YouTube Music, leveled up. Even out loud-and-quiet tracks with loudness normalization and shape the sound with a 5-band equalizer.
- Save a track. Download the current audio as a single, tidy .m4a.
- Tidy up the page. Optionally hide Shorts, recommendations, comments, thumbnails, or channel pictures, cap the quality, or switch off autoplay-next.

Built for you, not for data:
- Logged out, always. It never needs, reads, or touches your YouTube account.
- No accounts, no analytics, no phone-home. Requests for the media you play go to YouTube and its media servers, without your cookies; nothing is stored or shared with anyone else. If you turn on the SponsorBlock lookup, a 4-character hash goes to the SponsorBlock API, and nothing at all if you leave it off.
- Falls back gracefully, and lightly. Live streams, made-for-kids, age-restricted, or members-only videos keep playing on normal YouTube at the lowest quality, and YouTube Music switches to the song version when there is one. No broken playback, ever.

Firefox 128 and up, on desktop and Android. The essentials are on out of the box; the rest waits until you ask.