Optimise your pngs from the terminal in OSX

optimise-images-terminal.md

JPG:
$ brew install jpegoptim
$ mkdir lowRes
$ sips -Z 1024 *.jpg --out lowRes
$ cd lowRes
$ find . -name "*.jpg" -exec jpegoptim -m80 -o -p --strip-all {} \;

- PNG:
$ brew install optipng
$ mkdir lowRes
$ cd lowRes
$ sips -Z 1024 *.png --out lowRes
$ find . -name "*.png" -exec optipng -o7 {} \;