Questions and postings pertaining to the usage of ImageMagick regardless of the interface. This includes the command-line utilities, as well as the C and C++ APIs. Usage questions are like "How do I use ImageMagick to create drop shadows?".
You do not need to specify the colorspace option since the profile option sets the proper colorspace automatically.
Ok. I remove this command.
The jpg-image I want to convert inheres Photoshop clipping paths. And these are lost after the conversion to cmyk. Futhermore, the filesize grows with the factor 5!
You need to remove the color profile with +profile icc to restore the smaller image size. The clipping path should remain. Perhaps you are using an older version of ImageMagick. The current version is 6.3.2-1. We might be able to help further if you post a URL to your image.