JPEG pictures have a sliding scale of compression that decreases file dimension tremendously, but increases artifacts or pixelation the more the picture is compressed. Lossy image codecs approximate what your authentic picture seems like. For example, a lossy image might cut back the amount of colours in your image or analyze the picture for any unnecessary information. These clever technical tricks will typically scale back the file size, though they might scale back the standard of your image. These are the three main colours of sunshine that combine to produce different colours. Files saved on this format shall be optimized for the online, cellphones, film and video—anything that appears on a display screen.