Convert png and gif file to jpg in bash script

Very quick script for converting all png and gif files in directory to jpeg with image magick.

set -e   
dir=/var/www/default/public_images   

for ext in png gif; do   
    for i in `find "$dir"  -type f -regex '.*'$ext `; do 		
        ( 	
            filename=${i%.*}  		
            convert "$i" -quality 90 -strip "$filename.jpg" 		
            echo "$filename" 
        ) 	
    done 
done