PDF X Processing

GMG ColorProof supports PDF X-1, PDF X-3, and PDF 2.0 files. Before processing a PDF, the software validates whether the input file is a PDF compliant to PDF X or not. Other requirements according to the PDF X standard are not verified.

The option PDF X Processing (Color Management > Conversion CT/LW) is automatically preselected for PDFs that contain embedded ICC profiles. In workflows, you can additionally define color conversion rules with embedded or custom ICC profiles, as GMG ColorProof supports an automated processing of PDF X files together with other file types in the same workflow. These color conversion rules apply to all PDF input files without embedded ICC profiles and to all non-PDF files. In manual jobs, you need to deselect PDF X Processing to define color conversion rules.

With the option PDF X Processing, colors are automatically converted according to the output intent of the PDF/X file or in case of a PDF 2.0, to the output intent of the document page. Make sure that the output intent of the PDF matches the output intent of the Proof Standard. For example, if the output intent of the PDF is "ISOcoated_v2_300_eci.icc", you should use an "ISO Coated v2" proof standard. If you are not sure which output intent ICC profile is linked within a proof standard, just double-click the proof-standard in the Database view and click on the Color Management button on the left side of the configuration dialog.

If the output intent and the proof standard did not match, you would simulate how the given separations would look like if they were printed under the printing condition defined in the proof standard.

Example: If the output intent is "ISOcoated_v2_300_eci.icc" and you select an "ISO Uncoated Yellowish" proof standard, the proof will show the color appearance of ISO Coated V2 separations printed on uncoated yellowish stock and the appropriate ink standard on the press.

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