Untitled Script

Watch this reaction side by side with your own copy of the original, already lined up. No hunting for a matching moment to pause both videos at the exact same instant. No racing to hit play on both before they drift apart again. When the reactor stops the show to talk, your copy waits for them, and if either video buffers, both wait.

• Don’t have the extension yet? Get started here; you sign in once with Google.
• First time pairing with a sync link? Your first pairing on Get Started walks through it, with a short video.
• On your phone? ReactionSync runs in Chrome on a computer. Open this page there; the link stays the same.