Monday, April 2, 2012

How to convert RGB to CMYK?

My current solution for free RGB to CMYK conversion on Windows.

What you will need:

  1. Download and install ICC profiles
    1. Extract archive with Adobe ICC profiles. Dig into it and find files with "ICC" extension. Copy them to Windows\System32\Spool\Drivers\Color
  2. Download and install GIMP
    1. Follow standard instructions, remember the installation folder. It will be referred as "GIMP-INST" below
  3. Download and install Separate+ plugin
    1. Extract archive with Separate+ plugin
    2. Go to folder bin\win32 or bin\win32+lcms2
    3. Copy all executables from that folder to  GIMP-INST\lib\gimp\2.0\plug-ins\
  4. Close GIMP if it was started after installation
  5. Start GIMP
  6. Open image you want to convert to CMYK 
  7. Follow steps from section "----- How to use" from Separate+ readme file

I was able to convert and save JPEG with embedded ICC profile without any problem.

Feel free to post questions if you have any.