lj2tt LUAJIT truetype font parser Reference material for the curious Apple Reference docs https://developer.apple.com/fonts/TrueType-Reference-Manual/ Microsoft Reference docs https://docs.microsoft.com/en-us/typography/opentype/spec/font-file Adobe Technical Note 5176 - Compact Font Format Technical Note 5177 - The Type 2 Charstring Forat Implementations https://github.com/photopea/Typr.js https://opentype.js.org/ https://github.com/nothings/stb https://raw.githubusercontent.com/nothings/stb/master/stb_truetype.h Other references Let's Read a TrueType Font https://github.com/Jolg42/awesome-typography Example Fonts exo-font Arabic