In computing, JPEG (pronounced jay-peg) (named after the Joint Photographic Experts Group, which created the standard) is a commonly used method of lossy compression for photographic images.
The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality. JPEG typically achieves 10:1 compression with little perceptible loss in image quality.
JPEG compression is used in a number of image file formats. JPEG/Exif is the most common image format used by digital cameras and other photographic image capture devices; along with JPEG/JFIF, it is the most common format for storing and transmitting photographic images on the World Wide Web.
These format variations are often not distinguished, and are simply called JPEG.