The following is a demo of JavaScript Crop and Resize Images. Using a combination of PHP, ImageMagick, Prototype, script.aculo.us, and the JavaScript Image Cropper UI by Dave Spurr, this demo provides a visitor the ability to upload an image, crop it to their liking, and then resize the picture.
This example is just a demo and does not provide a way to upload an image of your choice. The download, however, does include the upload process. Your working images will be stored for 5 minutes and then permanently deleted.