Wavefont is a variable font with Weight, Round, and Vertical Alignment axes for rendering data like waveforms, spectrums, diagrams, and bars.
Wavefont bars correspond to values from 0 to 100, assigned to different characters:
letter-spacing CSS property with ch units is useful to adjust distance between bars, 1ch === 1 bar width.
To contribute, see github.com/dy/wavefont