ResizeImage For Quick Online Image Cropping And Resizing
J. Michael Arrington (born March 13, 1970 in Huntington Beach, California) is a serial entrepreneur and the founder of TechCrunch, a blog covering startups and technology news.
Arrington attended Claremont McKenna College (BA Economics, 1992) and Stanford Law School (JD, 1995) and practiced as a corporate and securities lawyer at two law firms: O’Melveny & Myers and Wilson Sonsini Goodrich... → Learn More

ResizeImage is the simplest and most usable tool I’ve seen to handle quick image resizing and cropping. It’s not as useful as Skitch, which a downloadable application for Macs only, but it works in a pinch.