Heyho,

I'm a little desperate here.
I need to embed large TIFF files into documents, maintaining their (pixel) resolution. They are pretty large photographs (around 10k x 10k pixels). They are used as background-images in the HTML.

Yet sadly, whenever I inspect the output PDF, they are pretty pixeled - and thus unusable for actual printing, in particular for A1 posters.

I've tried the different PrinceXML Settings, such as "prince-background-image-resolution:auto;" or the "--css-dpi" command line arg. As far as I understood it, the DPI does not actually affect the number of pixels, just their scale on the document.

How do I tell Prince to either downsample the images less or - in a perfect world - embed the raw images directly?
Thanks for any help!

Prince does not downsample images by default, it's only if you apply the prince-image-magic property or apply CSS or SVG filters that require rasterising them.

Can you try creating a very simple document that only includes the image and no other style sheets to check? Also, which PDF viewer are you using?

Aha, you pointed me in the right direction! I removed a bunch of CSS and now its working. So Prince behaved as expected, was my mistake

Thanks so much for the lightning fast response!