How to convert all text in a book from cmyk to black only.

[VBL2]

I have a 112-page PDF book from my client. Oddly, all the body text is a cmyk mix and I need to convert to solid black only. Is there a way to do that in PRINT PRODUCTION tab? It would be terribly time-consuming to edit each page separately. Appreciate the help.

[JR Boulay · Accepted solution]

Answer in one capture:

[ls_rbls]

Hi,

I believe that the answer to this question is answered here:

• https://helpx.adobe.com/ca/acrobat/using/color-conversion-ink-management-acrobat.html

Scroll down that page and read the section that talks about preserving or modifying black color.

[VBL2]

not working on text. Only allowing for converting to a different profile, but not changing the color of the text.

[ls_rbls]

Would be able to share a screenshot of what you see on screen?

[JR Boulay · Accepted solution]

Answer in one capture:

[Luke Jennings3 · Accepted solution]

You can determine the text color using the Output Preview tool (show: cmyk and rgb), then make a custom preflight fixup to map that color to black only. Note, you will need to duplicate an existing profile in order to allow editing. The example attached is changing a blue color to black.

[VBL2]

Success! Thank you for your help!