Open config.js and fill in both API keys, then refresh.
Create a free app at developer.spotify.com/dashboard
Add this exact Redirect URI in your Spotify app settings:
Go to console.cloud.google.com , create a project, enable YouTube Data API v3, and create an API key.
OAuth requires HTTP, not file://. In this folder run:
python3 -m http.server 3000
Then open http://localhost:3000
Whatever you play on Spotify — S2Y instantly finds and displays the music video on YouTube. Fully automatic, song after song.
Read-only access · No data stored on any server
Open Spotify on any device and start a song