People occasionally ask me how to resize an image, or what software they should use. Well now and then a little gem pops up, and this just may be one. Look at Pixlr: http://pixlr.com/express/

There are plugions for Firefox and Chrome browsers also to make using Pixlr easier.

Step1 web site customers will love this little utility. It will make it easier to get product imagery from suppliers onto your web site.