Joint Photographic Experts Group

(jay-peg)

An image compression specification named for the group that created it. While extensive compression is available, the JPEG specification is lossy (data is lost during the compression process). Therefore one should not recompress JPEG compressed images. Work from the original and compress that each time. JPEG works better for real-world scenes; line drawings are better compressed using some other format.

There are several variations on the JPEG format:

• JFIF (lossy [data lost], lossless [no data lost], and progressive [image shows up a portion at a time])
• JTIF (lossy [data lost] and lossless [no data lost])

More Information

• JPEG Home Page
• GIF vs JPEG