I have a disc full of pictures of a trip to the top of Puu'Oo that are huge. I want to upload them to my website but they are all about 1.5mb. I need a free editor to reduce their file size. Any suggestions?
Follow-up: What is the best way to reduce the size of a jpeg file while retaining as much of the original quality as possible? And what is an optimal file size for the pics?