Quote:....-printer profile is used only for soft-proofing in GIMP, to show out-of-gamut areas, but GIMP can't specify any printer profiles for use in printing. This is done directly in the printer driver. I hope I got it right...[
If you specify a profile something.icc for soft proofing then export as a tiff, there is an option to save the profile.
As far as I know, that works and is used for printing.
I can check using Imagemagick command line magick -identify verbose filename.tiff
Which might include a section like this
Code:
Profiles:
    Profile-icc: 2747952 bytes
  Properties:
    date:create: 2025-04-13T08:02:11+00:00
    date:modify: 2025-04-13T08:02:11+00:00
    date:timestamp: 2025-04-13T10:30:15+00:00
    icc:copyright: Copyright X-Rite, Inc.. This profile is made available by IDEAlliance, with permission of X-Rite, Inc., and may be used, embedded, exchanged, and shared without restriction.  It may not be altered, or sold without written permission of IDEAlliance.
    icc:description: SWOP2006_Coated3v2.icc
 

 
