Convert to color profile problem

[bobf]

Using GIMP 2.10.20, and I want to export an image with a CMYK profile, for printing purposes. I downloaded CMYK profiles from Adobe and set in Preferences. I can use one of the profiles (Coated GRACol 2006) to soft proof without a problem. Using the same profile in the Image - Color Management - Convert to Color Profile option, I get the error message "ICC Profile Validation Failed: Color profile is not for RGB color space".  I tried a few of the other profiles from Adobe but with the same results. I know that sRGB is what GIMP uses, but why is the conversion not working? New GIMP user. And if I can't do it this way, is there an alternative? Thanks.

[rich2005]

Gimp is 100% RGB. Soft Proofing is not conversion.
However there are various ways to export an image with CMYK colour space. One of them is a plugin Cyan details here: https://www.gimp-forum.net/Thread-CMYK-c...3#pid11743 links to downloads and a short how-to
If you have problems installing in Gimp then Cyan is also a stand-alone program. Export your RGB image from Gimp and run it through Cyan.

For a one-off there are web services for conversion example: https://www.rgb2cmyk.org/
Other ways: A bit over the top but Krita is free and converts and edits RGB/CMYK

[bobf]

(09-17-2020, 07:33 AM)rich2005 Wrote: Gimp is 100% RGB. Soft Proofing is not conversion.
However there are various ways to export an image with CMYK colour space. One of them is a plugin Cyan details here: https://www.gimp-forum.net/Thread-CMYK-c...3#pid11743  links to downloads and a short how-to  
If you have problems installing in Gimp then Cyan is also a stand-alone program. Export your RGB image from Gimp and run it through Cyan.

For a one-off there are web services for conversion example: https://www.rgb2cmyk.org/
Other ways: A bit over the top but Krita is free and converts and edits RGB/CMYK

CYAN plugin installed and seemed to execute also without problems. Trying to save image gave error message re extrasamples field not set; tried save a second time with no error and file saved. Looks like resolution reduced from 300 to 72 however so will continue to look into this. Will check out your other suggestions also; thanks for your input Rich.