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The place I print my thesis needs the PDF file to conform to certain demands. Demands I was not aware of prior to sending them the document.

So, here is the challenge:

Using PGF/TikZ how can I bulk change colors to CMYK and, if possible, flatten layered figures while retaining the visual properties I have made them with? I am, for example, placing scale bars on images and spy nodes of images in a foreground layer and the images themselves on the main layer.

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    I really don't get some of these printers. Can you change your printer because they should be able to change these on the preflight. Here are some related questions; tex.stackexchange.com/search?q=CMYK+[tikz]
    – percusse
    Commented Jun 18, 2014 at 14:10
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    I am rather annoyed. I do not think I can because this is all paid for by the university and deals are made, contracts signed and all that jazz. I have tried changing the document to CMYK, and I will see what they say to the new document.
    – The V
    Commented Jun 18, 2014 at 14:13
  • One (bad) workaround is to externalize your figures and then convert the pdf resulting from each figure to a hi-res PNG. This should circunvent problems with layers and transparencies, and perhaps it will solve the CMYK issue too. tex.stackexchange.com/questions/40516/… could help here.
    – JLDiaz
    Commented Jun 18, 2014 at 14:19
  • You could try jmakepdfx which uses ghostscript, but you may encounter problems with the transparency. (Since the process involves conversion to PostScript which doesn't support transparency.)
    – Nicola Talbot
    Commented Jun 18, 2014 at 14:51
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    Please check if this works: load xcolor before TikZ and add the cmyk option. If I understand the documentation of xcolor and its use by TikZ correctly, this should convert all colors TikZ uses to CMYK.
    – Raphael
    Commented Dec 11, 2014 at 19:00

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