How to convert PDF from CMYK to RGB, for displaying on iPad?

Question

According to this question:

Displaying PDF documents on iPad - Color Problems

some PDFs don\'t display right on iOS devices due to colors not being in RGB. It\'s

Answer 1

We use Ghostscript to convert from CMYK to RGB when generating PDFs from Postscript files. It should also work for PDF-to-PDF conversions.

The followind command line is used:

gs -sDEVICE=pdfwrite -dBATCH -dNOPAUSE -dCompatibilityLevel=1.4 -dColorConversionStrategy=/sRGB -dProcessColorModel=/DeviceRGB -dUseCIEColor=true -sOutputFile=output.pdf input.ps