Malcolm, Try the ImageMagick convert, http://www.imagemagick.org/ It supports the relevant formats: http://www.imagemagick.org/www/formats.html Steve. -----Original Message----- From: Starlink development [mailto:[log in to unmask]] On Behalf Of Malcolm J. Currie Sent: 06 September 2004 13:23 To: [log in to unmask] Subject: Q245: Plotting options with gks Do we have a GKS or PGPLOT driver that creates files directly in CMYK? If not, can anyone please recommend software to convert an encapsulated RGB colour PostScript file to CMYK format. My instant response was look at the GIMP. A web-search generates many packages... Malcolm