Definition: JPG is the file extension, but it is properly referred to as JPEG, short for Joint Photographics Experts Group- this is the committee that created the JPEG standard. Unlike the GIF format, which uses a lossless compression method, the JPEG format is lossy according to a quality value which ranges from 100 which is the highest quality but alos the largest file size down to 1 which is very poor quality but very small files.
JPG is better than GIF for photos as GIF files can only have 256 different colors and JPG can have millions. There is a newer JPEG standard called JPEG2000 with better compression and other capabilities but this isn't in wide use yet.
Glossary:
A B C D E F G H I J K L M N O P Q R S T U V W X Y ZAlternate Spellings: JPEG
Examples: All my photos are stored as JPGs.
