This term stands for Joint Photographic Experts Group. It is the name of the committee that developed the format. You don’t need to remember the full name; instead, remember that a JPEG is a compressed image file format. JPEG images are not limited to a certain amount of color like GIF images are. Therefore, the JPEG format is best for compressing photographic images. If you see a large colorful image on the Web, it is most likely a JPEG file. While JPEG images can contain colorful high-resolution image data, it is a loose format. This means some quality is lost when the image is compressed. If the image is compressed too much, the graphics become noticeably blocky and some of the detail is lost. Like GIFs, JPEGs are cross platform—meaning the same file will look the same on both a Mac and PC.