Deezer and Spotify give access to your music library through their api. The first step is to give access to Spotizr to your Deezer and Spotify account. After that, you can choose what you want to import into your Deezer account. Click sync and Spotizr will import your library.
You can import : Playlists, Favorites Albums, Saved/Starred Tracks, Follow artists
Feel free to email us to provide some feedback, give us suggestions for new features or report a bug.