scanned_pdf.sh

#!/bin/bash

# Make a PDF look scanned. 
# Extracted from https://github.com/baicunko/scanyourpdf and modified for smaller output files (compression lower density).

INPUT_FILE=$1
/usr/local/bin/convert -density '80' ${INPUT_FILE}  -colorspace 'gray' -linear-stretch '3.5%x10%' \
	-blur '0x0.5' -attenuate '0.25' +noise  Gaussian -rotate 0.5 \
    -compress lzw -quality 50  scanned_${INPUT_FILE}