Removing one song at a time from your Liked Songs list on Spotify can be annoying, but this article will teach you an easy way to like them all at once. Instructions apply to the browser version and mobile apps.
How to remove all liked songs on Spotify
You can't like all songs in the Spotify app at once, but the desktop apps for Windows and Mac let you remove all the songs you like at once.
Here's how to mass delete all songs from Spotify's desktop apps:
Open the Spotify desktop app on your Mac or Windows computer.