Me and my friend are kinda struggling a lot. We have a "overlay" PDF file containing a PNG bitmap image (no vectors). We use this PDF for automatic montages in PDFlib together with generic photos to ...
I am working in Illustrator CC with a CMYK file that has lines stroked with black at an opacity of 10%. When I save this image to a .pdf, the strokes turn pure black instead of being transparent. Why ...
So I have this PSD with several transparent layers. As I need to hand out the file for a professional printing, I export it through Photoshop (CS5) using the usual PDF/X-4:2008 PDF 1.4 profile to ...
I've created a document using OpenOffice / LibreOffce with a black background and PNG images which have some transparency. I exported that document to PDF and printed it. The black which comes from ...