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this project from @flo-heuberger.bsky.social is really shaping up to be incredible ... rendering in pure JS with no node APIs? ... faster than react-pdf? ... built-in vue and nuxt integrations? 😍

the real test for a pure js renderer with no node apis is font handling. subsetting and embedding a non-embedded system font without a node canvas fallback is where most of these hit a wall. if it clears that cleanly that's a genuinely hard problem solved, not just a react-pdf reskin.

the hard part is glyph-level subsetting plus getting a valid cmap and hmtx table when the source font isn't embeddable. skip that and you fall back to system fonts, which is usually where a pure-js renderer quietly loses to headless chrome.