Question

I’ve a unix server (mac osx in fact) which transform actually PS files to PDF files. It does this through ps2pdf, with those parameters:

 ps2pdf14 \
   -dPDFSETTINGS=/prepress \
   -dEPSCrop \
   -dColorImageResolution=72 \
   -dColorConversionStrategy=/LeaveColorUnchanged \
    INPUT_FILE \
    OUTPUT_FILE

But now I’ve to adapt this script to have a PDF file as input instead as PS.

So I guess that ps2pdf will not work anymore, and I need something which can reduce the quality of the pdf.

Do you know a tool like this?

Answer 1

The ps2pdf14 script just runs the ps2pdfwr script with -dCompatibilityLevel=1.4, which in turn uses gs with various parameters. You can examine that script to see the options.

You could run gs directly, putting in the various options added by the scripts and your own -d options (which are passed directly to gs). I.e. try:

 gs \
   -sDEVICE=pdfwrite \
   -dPDFSETTINGS=/prepress \
   -dEPSCrop \
   -dColorImageResolution=72 \
   -dColorConversionStrategy=/LeaveColorUnchanged \
   -q \
   -dNOPAUSE \
   -dBATCH \
   -sOutputFile=OUTPUT_FILE \
    INPUT_FILE