Adding PDF support to a Rust image converter — what I learned about libvips and PDF rendering

Been building Convertify — a free image converter in Rust + Axum + libvips. This week I added PDF to JPG/PNG support. Thought I'd write up what actually happened because it was more interesting than expected. The naive approach My existing image pipeline is straightforward — VipsImage::new_from_file(path) , some processing, image_write_to_file(out_path) . Images just work. I assumed PDFs would be similar. First attempt: let image = VipsImage :: new_from_file ( & format! ( "{}[dpi={}]" , file