Resize image with imagemagic convert utility

resize_image.sh

#!/bin/bash

# find $1 -maxdepth 1 -name "*.jpg" => finds JPG images in the directory you give it (based on the $1 value) that the script is in
# $1 is the directory you give the script for example "./resize_image.sh /home/folder_to_optimize/"
for file in `find $1 -maxdepth 1 -name "*.jpg"`
do
    # convert the image and replace the original one
    # throttle 50 = only use 50% of the cpu power
    # 2500x = max 2500px, height will be automatically be adjusted based on the width
    convert -limit throttle 50 $file -resize 2500x -verbose $file
    # delay van 0.5 sec
    sleep 0.5
done