I've been pondering about that too (mostly something with having a service worker drawing each char on a canvas, uploading that to a server), but keeping track of OS/Browser/vendor/font-setup/... (let alone getting it all out of the browser) makes it pretty hairy to get right.
I've been pondering about that too (mostly something with having a service worker drawing each char on a canvas, uploading that to a server), but keeping track of OS/Browser/vendor/font-setup/... (let alone getting it all out of the browser) makes it pretty hairy to get right.