here's a better solution and IT DOESN'T NEED TO REDUCE IMAGE QUALITY! Open your newly rendered JPG in Window's Paint program (you know, the one in the accessories folder you never use?) then just hit save. you don't have to convert to a different format. just load the JPG and hit save. it resaves it in JPG format without reducing picture quality. if you check the new JPG's properties you'll see that the file went ALL THE WAY DOWN! anyway, i had the same problem. i needed a 40KB thumbnail but the pic i had was 43KB...i used window's paint and it shrunk it all the way down to 4.04KB without any aparent resolution decrease.