webp convert all files in current folder with best compression

webpConverter.sh

#!/bin/bash

# -m maximize compression power
# -mt multithreading
# -q quality
# -af optimize with auto filter
#  -size enter the wanted compression file size in bytes 250000 are 250 kiloBytes

PARAMS=('-m 6 -q 50 -mt -af -progress')

if [ $# -ne 0 ]; then
	PARAMS=$@;
fi

cd $(pwd)

shopt -s nullglob nocaseglob extglob

for FILE in *.@(jpg|jpeg|tif|tiff|png|svg); do
    cwebp $PARAMS "$FILE" -o "${FILE%.*}".webp;
done