I did! See brow.sh It uses Firefox as a backend so can in fact run Wasm. However it doesn't use OCR, it uses the DOM to get precise coordinates for text nodes,

I did! See brow.sh It uses Firefox as a backend so can in fact run Wasm. However it doesn't use OCR, it uses the DOM to get precise coordinates for text nodes, this recreating a pure text representation of the page, using nothing but spaces and carriage returns for "formatting".