UPDATE 16/3/2025: Unfortunately, Spotify made it very hard to get an access token to make this script work, so until I find a solution (unlikely) this script is deprecated. I will keep the script up for future reference.

What does this script do?

This script can convert your music playlists between YouTube & Spotify with a single click.

How to use it:

1. IMPORTANT: Make sure you are signed in to BOTH YouTube and Spotify in your browser.

2. Open the page of the playlist you want to convert.

3. Click the Tampermonkey icon, then under "YouTube / Spotify Playlists Converter" you'll either find YouTube to Spotify or Spotify to YouTube depending on the playlist currently open, click it to start the conversion.

4. Once done, the playlist will appear in the opposite service under the same name.