JPEG (Joint Photographic Experts Group) is a file extension for image files. Most of the photographs and Internet graphics are stored in the JPEG file format. JPEG files are commonly referred as JPG images. Many bitmap images are saved in a .jpg format for the purpose of compressing the files. This is convenient to transfer or download the files and using them on the web. This file type was developed by Joint Photographic Experts Group for compressing the image data by reducing the sections of images to blocks of pixels.