I can’t imagine that there’s a huge demand for a tool that automatically finds and removes duplicates in Spotify playlists. Nevertheless, such a tool could come in handy, especially when it comes to collaborative playlists or large playlists created for parties or events.
Enter the Spotify Duplicate Tool.
If you copy the http URLs from your Spotify playlist and paste it into the window, the Duplicate Tool will automatically find duplicate songs. This even works for songs on different albums, such as the single version vs. the album version. Then choose which versions to delete.
The tool will generate new code. Copy and paste the code into a new playlist window and you have an updated duplicate-free playlist.