#!/bin/bash

#!/bin/bash

width=$1
if [ -z "$width" ]
then
	width=1920
fi

directory=resize-$width
mkdir $directory

# prevent empty directories from returning *.jpg in for loop
shopt -s nullglob

for ext in jpg jpeg png; do
	for file in *."$ext"; do
		echo resizing "$file";
		mogrify -path $directory -filter Triangle -define filter:support=2 -thumbnail $width -unsharp 0.25x0.25+8+0.065 -dither None -posterize 136 -quality 82 -define jpeg:fancy-upsampling=off -define png:compression-filter=5 -define png:compression-level=9 -define png:compression-strategy=1 -define png:exclude-chunk=all -interlace none -colorspace sRGB -strip "$file"
	done
done