Find image files and optimise them with different command line tools

image-optimise-guetzli.sh

#!/bin/bash

# Find all JPEG files and do stuff with https://github.com/google/guetzli

find . -maxdepth 4 -type f -iname '*.jpg' \
 -exec sh -c '(guetzli "{}" "{}.jpg")' ';'
 

image-optimise-jpegtran.sh

#!/bin/bash

# Find all JPEG files and do stuff with http://jpegclub.org/jpegtran/

find . -maxdepth 4 -type f -iname '*.jpg' \
 -exec sh -c '(jpegtran -copy all -optimize -outfile "{}.jpg" "{}")' ';'
 

image-optimise-pngquant.sh

#!/bin/bash

# Find all PNG files and do stuff with https://github.com/pornel/pngquant/

find . -maxdepth 4 -type f -iname '*.png' \
 -exec sh -c '(pngquant --skip-if-larger "{}")' ';'
 

image-rename-to-overwrite.sh

#!/bin/bash

# Find the files just created and drop the extra suffix

find . -maxdepth 4 -type f -iname '*.jpg.jpg' \
 -exec sh -c '(hoplaa={}; mv -f "{}" "${hoplaa%.jpg}")' ';'