1. JPEG JPEG stands foe Joint Photographic Experts Group.
It is a standard method of compressing Photographic images.
The file extensions for this format are: .JPEG, .JFIF, .JPG, .JPE although.
.JPG is the most comman on all platforms.
JPEG/JFIF is mostly used for storing and transmitting photographs on the world wide web,

2. Some facts about JPEG
JPEG is a well established standard with plenty of software available including a free software
JPEG is at its best on photographs and painting of realistic scenes with smooth varriation and color.
The resulting compression ratio can be varried according to need by being more or less aggressive in the divisors used in the quantization phase.