How do I resize images on a mac? I've had my MacBook for 4 months know I never knew how to do this. On Windows in paint all you do is paste the picture and then resize it by dragging the corners, is there a way to do this on macs? I can't seem to find a way to do this in preview. And in Seashore I don't know how to do this unless I manually put in the scale size I want. I simply want to drag the corner of the picture to make it the size I want, how can I do this? Thanks.