gs

Reduce PDF file size

gs -dNOPAUSE \
	-dBATCH \
	-sDEVICE=pdfwrite \
	-dCompatibilityLevel=1.4 
	-dPDFSETTINGS=<setting> \
	-sOutputFile=output.pdf input.pdf

<setting>: /screen, /ebook, /printer, /prepress