Avalanche | watch YouTube together

Avalanche turns YouTube into a lightweight, low-latency shared viewing party.

Create a room from any YouTube video, share the 4-character room code or invite link, and watch together. Avalanche keeps playback synchronized for everyone: play, pause, seek, and video changes, perfectly synchronized, with near-zero latency. No account is required. WATCH TOGETHER, WITHOUT THE COUNTDOWN • Create a room in one click from the YouTube video you are watching • Join instantly with a short room code or invite link • Keep play, pause and seek synchronized across all participants • Follow the host automatically when they change video • Transfer the host role to another member at any time • Let the host allow or restrict video changes, seeking and pausing • Queue videos and decide what to watch next • Works with regular YouTube videos and YouTube Shorts • See who is in the room, who is the host, and who is currently playing, paused or reconnecting BUILT FOR REAL WATCH SESSIONS Avalanche uses a lightweight room server to coordinate playback. A small status badge appears directly on YouTube, showing the room code and connection state. Join notifications, adjustable notification position, a draggable badge and light/dark themes keep the experience out of the way. The interface is available in English, French, German, Spanish, Italian and Russian for now. PRIVACY Avalanche does not include analytics, telemetry, advertising or tracking. Your settings and optional account token are stored locally in Chrome. Room state - room code, display name, video ID, playback position and member presence - is sent only to the server you configure. The default server is https://avalanche.watch, and you can point the extension at your own self-hosted server instead. PERMISSIONS Avalanche needs access to YouTube to read and control the video player, and access to its server to create and join rooms. Access to custom servers is optional and requested only when you configure one. GOOD TO KNOW • Requires Chrome 116 or later • Designed for desktop YouTube watch pages • Ad playback, autoplay and some YouTube player behaviours are handled on a best-effort basis • Not affiliated with, endorsed by or sponsored by YouTube or Google