Convert images to smaller size and lower quality to reduce file sizes for Magento's original product photos

convertImages.sh

#!/bin/bash
# convertImages.sh
# Author: Peter Jaap Blaakmeer (elgentos.nl)
# https://gist.github.com/peterjaap/7080989

NEWQUALITY=80
NEWSIZE=1000
DIRECTORY=media/catalog/product/
du -hs $DIRECTORY
 
for f in $(find $DIRECTORY -type f); 
do 
        WIDTH=`identify -format '%w' $f | tr -d "\r\n"`;
        
        if [ $WIDTH -gt $NEWSIZE ]; then
            SIZEBEFORE=`ls -lah $f | awk '{ print $5}'`;
            convert $f -resize $NEWSIZE -quality $NEWQUALITY $f;
            SIZEAFTER=`ls -lah $f | awk '{ print $5}'`;
            echo "$f has been converted - from ${SIZEBEFORE} to ${SIZEAFTER}";
        fi
done