Converts many PNG images to WEBP using cwebp

png2webp

#!/bin/bash

# Converts PNG images to WEBP
# If no argument is given, all PNG images in the
# working directory are converted.
# Otherwise only the files given as arguments will be
# converted.

files="$@"
if [ $# -eq 0 ]; then
    files=`find . -name "*.png"`
fi

for file in $files; do
        cwebp -q 80 "$file" -o "${file%.*}.webp"
done