Image to MIDI, right in your browser

Lumidi reads an image's colour and light, picks a musical key from it, and writes a melody, a chord progression or an arpeggio guided by the image's brightness. You can preview the result with a built-in sine synth and download it as a standard MIDI file for any DAW. Plain HTML, CSS and JavaScript with no dependencies or build step.

Everything runs client-side: the image and the MIDI file never leave your machine.

Live: https://theogal.github.io/lumidi/

Disclaimer: Im into web developing but this app was entirely vibe-coded with Claude

github details and download: https://github.com/TheoGal/lumidi