I can confirm that we have degraded quality for pixel graphics so far. The call to `render_for_printing_with_options` is the "cause" of the problem. If I switch back to `render` everything is fine.
But: pdfpc supports notes from PDF annotations, and if we render a PDF with annotations with `render` we see a symbol at the annotation position in pdfpc. Therefor we have `render_for_printing_with_options` where we disable the icon for the annotations. With a quick look at the poppler API I was not able to find another function call to hide annotations but keep the good rendering.
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