I Taught a Browser to Play Piano — Here's How It Figures Out Which Finger Goes Where

A browser-based piano fingering tool reads MusicXML/MXL scores locally and determines finger placement and hand motion.

It uses a JavaScript physics and biomechanics simulation to assign fingerings and visualize movement on the keyboard.

All processing stays on-device, so files are not uploaded, improving privacy, speed, and offline usability.

The approach shows that heavy music analysis can run entirely in the browser while keeping copyrighted scores protected.