gx-pdf-optim

#!/bin/sh

set -e
set -u

INPUT="${1:-}"
OUTPUT="${2:-}"

if [ -z "$INPUT" ]; then
	echo "ERROR: please give a input file name"
	exit 1
fi

if [ -z "$OUTPUT" ]; then
	OUTPUT="$(echo "$INPUT" |sed -e 's/\.pdf$/.optim.pdf/')"
fi

# either screen, print or ebook
QUALITY="${3:-screen}"
case "$QUALITY" in
	print|screen|ebook) ;;
	*) echo "ERROR: quality must be one of screen|ebook|print"
		exit 1
esac

gs -sDEVICE=pdfwrite \
	-dCompatibilityLevel=1.4 \
	"-dPDFSETTINGS=/$QUALITY" \
	-dNOPAUSE \
	-dQUIET \
	-dBATCH \
	"-sOutputFile=$OUTPUT" \
	"$INPUT"