Utilize data compression to reduce the size of image files used in class. Compression ”squeezes” files by removing data deemed unnecessary by the compression software. In the case of images, the “unnecessary” data is usually pixilated color. Compression is used to increase the number of files that can be saved to removable discs, such as CD-ROM and DVD, or to computer hard drives. It also enhances the Internet experience by reducing the time it takes to download images and other file types. Compression is typically applied to images, sound, and digital video files, but can also be applied to other multimedia files.