#!/bin/sh

if [ ! -d "small" ]
then
	echo "Create dir *small/*"
	mkdir -p "small"
fi

echo "Convert pictures to preview and bigger version..."
for i in *.$1; do 
	magick  $i -quality 50% -resize '800x800' small/${i%.$1}-preview.$1;
	magick  $i -quality 88% -resize '2976x2976' small/$i;
	
done

echo "Delete metadata..."
exiftool -all= -overwrite_original small/*

echo "Done!"