When Do You Need the Extension?
What the Extension Enables
The extension bridges the gap between SyncUp and DRM-protected streaming services.
Streaming Services
Netflix, Disney+, HBO Max, Amazon Prime Video, Hulu, Paramount+, Peacock, Crunchyroll, and Apple TV+.
DRM Support
Intercepts playback events from DRM-protected players that block external sync tools.
Sub-second Sync
Play, pause, and seek actions sync within 200ms via WebSocket connection.
Privacy First
No tracking, no analytics. The extension only reads video player state and forwards playback events.
How It Works
Install the Extension
Click the install button for your browser. Two clicks and you're done.
Create a Room on SyncUp
Create a room on SyncUp (free, no account required) and share the 6-character code with friends.
Start Watching
Open your streaming service, play a video, and playback syncs across all viewers in the room.
Download for Your Browser
Extension FAQ
The SyncUp browser extension enables synchronized playback on streaming services like Netflix, Disney+, HBO Max, Amazon Prime Video, and other DRM-protected sites. Everyone in your watch party sees the same moment at the same time.
The extension is available for Chrome, Firefox, and Microsoft Edge. Safari is not currently supported as it doesn't allow the required extension capabilities.
Yes, the SyncUp browser extension is free to use. SyncUp itself has an optional Plus plan for bigger rooms and longer voice chat, but the extension works the same on free or Plus.
No account is required to use SyncUp or the extension. Just install and start watching together.
The extension works with Netflix, Disney+, HBO Max, Amazon Prime Video, Hulu, Paramount+, Crunchyroll, and most other streaming services. Each viewer needs their own subscription to the service.
No! YouTube, Twitch, Kick, and thousands of other HTML5 video sites work directly in SyncUp without any extension. The extension is only needed for DRM-protected streaming services.
Yes. The extension only interacts with video players to enable synchronization. We don't collect your browsing history, streaming activity, or personal data. See our privacy policy for full details.
Mobile browsers don't support extensions, so the SyncUp extension requires a desktop browser. However, SyncUp works on mobile for YouTube, Twitch, and other non-DRM content without any extension.