jrtechs-NodeJSBlog/optimizeImages.sh

#!/bin/bash

# Simple script for optimizing all images for a website
#
# @author Jeffery Russell 7-19-18

WIDTH="690>"  # the ">" tag specifies that images will not get scaled up

folders=("./entries" "./img")

for folder in "${folders[@]}"; do

    for f in $(find $folder -name '*.jpg' -or -name '*.JPG'); do
        convert "$f" -resize $WIDTH "$f"
        jpegoptim --max=80 --strip-all --preserve --totals --all-progressive "$f"
    done

    for f in $(find $folder -name '*.png' -or -name '*.PNG'); do
        convert "$f" -resize $WIDTH "$f"
        optipng -o7 -preserve "$f"
    done

done