Spotify × YouTube Sync

About

Never fumble between tabs again. Spotify × YouTube Sync watches your YouTube tab and automatically controls Spotify playback — so your music fills every gap without you lifting a finger.
How it works
Open the extension popup, assign your YouTube tab and your Spotify Web Player tab, and you're done. From that point on, pausing YouTube starts your Spotify music, and playing YouTube pauses it — instantly and automatically.
Features
• Smart buffering detection — won't pause Spotify just because YouTube is loading
• Debounced state changes — no rapid toggling if YouTube skips around
• Tab safety warnings — alerts you if an assigned tab is closed or navigated away
• Session persistence — tab assignments survive the popup closing
• No account, no backend, no data collection — everything runs locally in your browser
Getting started

Open a YouTube tab and a Spotify Web Player tab (open.spotify.com)
Click the extension icon in your toolbar
Assign each tab its role using the popup
That's it — sync begins immediately

Privacy
This extension does not collect, transmit, or store any personal data. It communicates only between your local browser tabs using Chrome's standard extension messaging APIs.