Script (or some other means) to convert RGB to CMYK in PDF?
This answer is not for Illustrator, but for ‘some other tool’, namely Ghostscript (download gs871w32.exe or gs871w64.exe). Ghostscript allows you to ‘re-distill’ PDFs (without an intermediate conversion to PostScript, the dreaded ‘refrying’ detour). Try this command: gswin32c.exe ^ -o c:/path/to/output-cmyk.pdf ^ -sDEVICE=pdfwrite ^ -dUseCIEColor ^ -sProcessColorModel=DeviceCMYK ^ -sColorConversionStrategy=CMYK ^ -sColorConversionStrategyForImages=CMYK ^ input-rgb.pdf And if you … Read more