Building JoyStrum: a simple browser-based guitar reference

I wanted a guitar reference I could open in the browser while practicing: chord diagrams, a fretboard note map, one scale path, and a capo chart, without creating an account.

JoyStrum is that reference. It currently covers eight open chord shapes, a C major scale path, standard-tuning fretboard notes, and capo transposition. Each page keeps the diagram, reference audio, and a printable view together for the same shape.

The page I open first is the guitar chord chart.