Cropp.me allows you to upload and crop up to five images at the same time. You can crop your images to one of nine predefined sizes or you can specify a custom size.
Applications for Education
Cropp.me could be a good tool for students to use when they need to resize and center images to use in their slideshows and videos. As I learned from Ken Shelton, proper image cropping and centering can make a world of difference in the visual quality of slideshows. Cropp.me does not require you to register in order to use the service.
H/T to Lifehacker.
