On Oct 25, 2013, at 9:09 AM, hwitloc@gmail.com wrote:

GIMP also shows an RGB model for the resulting pdf file. Also is this mention of pixel resultion of 72x72 correct or useful? I tried to get a 300 dpi resolution for output.

ConTeXt just typesets text, places graphics and runs graphic creation routines which have been grafted in to TeX as libraries. The only things which should result in pixel information are: - graphics --- you're in control of their settings when they're created - internal graphic creation --- at one point in time there were issues w/ transparency, but these were resolved AFAIR So, check your settings for any graphics you're placing, and for those which you are creating w/in ConTeXt. Neither of the tools you mentioned are suited for checking pre-press-readiness of a file. Multivalent has some facilities for validating a file: http://multivalent.sourceforge.net/ as does qpdf: http://qpdf.sourceforge.net/ There are free on-line tools: http://www.pdf-tools.com/pdf/validate-pdfa-online.aspx Lots of commercial options such as Adobe Acrobat, Enfocus PitStop, http://www.fixmyprintfile.com/, &c. List here: http://www.pdfxreport.com/doku.php?id=en:tools If you can make a valid PDF/X file, you may find a useful tool here: http://www.pdfxreport.com/doku.php?id=en:faq William -- William Adams senior graphic designer Fry Communications Sphinx of black quartz, judge my vow.