JPEG
full spelling ： Joint Photographic Experts Group
JPEG is a widely used standard method of compression for photographic images. JPEG is a format most used for storing and transmitting photographs on the World Wide Web.
JPEG support 24-bits of color depth or 16.7 million colors.
JPEG is a lossy compression algorithm. JPEG works by converting the spatial image representation into a frequency map. A Discrete Cosine Transform separates the high and low frequency information present in the image. The high frequency information is then selectively discarded depending on the quality settings.