webjpg.sh

#!/bin/bash
# Requires at least ImageMagick and https://github.com/kud/jpegrescan
if [ "$1" == "" ] ; then
  echo "Usage: $0 infile [outfile [quality]]"
  exit 1
fi
out="$2"
if [ "$out" == "" ] ; then
  out="`echo "$1" | sed -e 's/\.[jpg][pni]e\?[gf]$/.jpg/'`"
fi
quality="80%"
if [ "$3" != "" ] ; then quality="$3" ; fi
tempfile="`mktemp tmp.XXXXXXXXXXXX.jpg`"
convert -strip -interlace Plane -sampling-factor 4:2:0 -quality $quality -define jpeg:dct-method=float "$1" "$tempfile"
jpegrescan -s -q "$tempfile" "$out"
rm "$tempfile"
ls -l "$out"