Open the list files your handheld or game reads and edit them as a table. Files are processed in your browser and never uploaded.
Reads and converts between RetroArch .lpl, Powkiddy game_strings_ko.xml and EmulationStation gamelist.xml. Rename and sort entries, manage thumbnails, and fix ROM filenames some devices can't read.
Edits Beat Saber .bplist playlists. Point it at a song folder and it calculates the hashes itself; it can look up album art too.
New to this? Start with the Powkiddy game list and Beat Saber playlist guides.