I developed a very simple app to back up your beatmaps into a single JSON file and then download all your maps automatically. The goal is to store your beatmaps as a very small JSON file that you can save anywhere, such as in a Discord message, and restore all your beatmaps if needed. You can also compare two backup files and download any beatmaps you don't already have.
https://github.com/saliherdemk/osu-lazer-backup
I couldn't try it with large backup files, so if you have over 1.5k beatmapsets and could share the backup file, I'd really appreciate it.
https://github.com/saliherdemk/osu-lazer-backup
I couldn't try it with large backup files, so if you have over 1.5k beatmapsets and could share the backup file, I'd really appreciate it.