GhostScript dPDFSETTINGS shortcut

Question

I'm very new to the GhostScript world and I was wondering what was the configurations that are setted when we write, for example, -dPDFSETTINGS=/ebook?

The problem I face is that /ebook is too low quality and /printer is to heavy. I'm searching somewhere in the middle :)

Answer 1

Based on the the corresponding documentation, you probably want to set ColorImageResolution like this for instance if you want to tune image resolution:

gs -sDEVICE=pdfwrite -q -dPDFSETTINGS=/printer -dColorImageResolution=150 -o out.pdf in.pdf

You need to set GrayImageResolution or MonoGrayImageResolution for non coloured images.

Be aware that setting the resolution does not work if PDFSETTINGS is unset (respectively set to /default). I don't know why.