Find duplicates, catch misfiled tracks, and empty the liked-songs backlog you've been ignoring.
Runs entirely in your browser — your library never leaves it. · Use your own Spotify app · build 2026-09-08-0443
Matches by ISRC — remasters caught, remixes left alone.
A genre playlist is only ever compared with other genre playlists.
Unfiled tracks, one at a time, each with a suggested home.
Surfaced for you, never removed automatically.
Create one at developer.spotify.com/dashboard, tick Web API, add the redirect URI above, then paste the client ID. Stored only in this browser; no secret is needed.
Spotify for your library · genre tags from Last.fm (Spotify no longer provides genre — top yours up from the Playlists screen) · release styles from Discogs · source on GitHub.