JPEG

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This article is about the image coding standard that is informally referred to as "JPEG", which is an acronym for the name of the committee that created the standard; for information about the committee, please refer to the Joint Photographic Experts Group article.

"JPG" redirects here. For the magazine, see JPG (magazine).

JPEG

A photo of a flower compressed with successively more lossy compression ratios from left to right.
Filename extension	.jpg, .jpeg, .jpe .jif, .jfif, .jfi (containers)
Internet media type	image/jpeg
Type code	JPEG
Uniform Type Identifier	public.jpeg
Magic number	ff d8
Developed by	Joint Photographic Experts Group
Type of format	lossy image format

In computing, JPEG (pronounced /ˈdʒeɪpɛɡ/, JAY-peg) is a commonly used method of 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.

The MIME media type for JPEG is image/jpeg (defined in RFC 1341).