meillo@0: #!/bin/sh
meillo@0: #
meillo@0: # convert pdf to tiff and back to pdf in order to convert text to image
meillo@0: # writes to stdout
meillo@0: #
meillo@0: # depends on: gs, tiff2pdf (libtiff-tools)
meillo@0: 
meillo@0: temp="`mktemp /tmp/${0##*/}.XXXXXX`"
meillo@0: trap 'rm -f "$temp"' 0 1 2 3 15
meillo@0: 
meillo@0: for i do
meillo@0: 	# echo "processing $i"
meillo@0: 	gs -q -dNOPAUSE -dBATCH -sPAPERSIZE=a4 -dPDFSETTINGS=/prepress \
meillo@0: 			-r300 -o "$temp" -sDEVICE=tiffgray -sCompression=lzw "$i"
meillo@0: 	tiff2pdf -z "$temp"
meillo@0: done