I built this website because the only way to change a playlist image on Spotify requires you to boot up your PC, install the Spotify PC client, and then change your playlist image. This website makes it possible to use your mobile device to change the name, description and image of your Spotify playlists. The website can be found here
Use your phone to change the name, description and image of your Spotify playlists
Doesn't require you to install an app
Changes the details extremely quickly