JPG is a digital image format which contains compressed image data. With a 10:1 compression ratio JPG images are very compact. JPG format contains important image details. This format is the most popular image format for sharing photos and other images on the internet and between Mobile and PC users.
The lossy compression of JPG images is commonly at a ratio of 10:1, providing low loss of quality. Two main types of JPG images are: JPG/JFIF (used for storing and sending photos online) and JPG/Exif (used in many digital cameras). Due to the way JPG files are compressed, there is some loss in exact data and they should not be edited excessively since each additional edit decreased the quality due to a the repeated compression patterns. JPG files are best utilized as the final product and loss-free files are best used for editing. Compression at rates of 100:1 are possible, but decrease the quality significantly, thus it it is recommended to keep the compression rates to 20:1 at most to retain quality and reduce the number of artifacts in the image.