If you're not already using it, the read-fonts and skrifa crates from https://github.com/googlefonts/fontations https://github.com/googlefonts/fontations can pa

If you're not already using it, the read-fonts and skrifa crates from https://github.com/googlefonts/fontations https://github.com/googlefonts/fontations can parse variable font data (as well as pretty much anything else you might want out of an opentype font).