[adrianh]

We do indeed generate vector PDFs, not embedded bitmaps.

Our graphics engine works with Canvas API instructions — like "draw a line from point (A,B) to (C,D)." This API is small enough and low-level enough that it can also generate pristine vector output.

That's in fact one of the features of Skia Canvas (vector output in PDF and SVG).

[rafaelmn]

Ah nice didn't know it had a PDF backend - that sounds perfect for this use case.