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c#pdfimage-conversion

convert a pdf for print

I have some pdf documents and I need to find a way to automate convert all the images included in the pdfs from RGB to CMYK.

I prefer to use c# as programing language. I worked in the past with iTextSharp but it doesn't allow me to do this (it doesn't or I don't know).

The question is: what should I use to extract all the images from a pdf, convert from RGB to CMYK and put all the converted images back (no other changes).

Thanks.

Solution

  • PDF files using only CMYK colorspaces are sometimes called PDF/X. If a commercial library is an option for you, you could give Amyuni PDF Converter a try. There is a web post called "Creating PDF/X-1 or PDF/X-3 with Amyuni PDF Converter" that explains the process you would need to apply: .

    Usual dislcaimer applies