JPEG is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. 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 is the most widely used image compression standard on the internet.

The term "JPEG" is an initialism/acronym for the Joint Photographic Experts Group, which created the standard in 1992. The main basis for JPEG is the discrete cosine transform (DCT), a lossy image compression technique that was first proposed by Nasir Ahmed in 1972.

JPEG files usually have a filename extension of .jpg or .jpeg.

More Info: