A PNG file is a transparent background image saved in the Portable Network Graphic (PNG) format, which is often used to save web graphics, digital pictures, and other images with transparent backgrounds. It's a raster graphic that's comparable to a .JPG picture but with lossless compression and transparency capabilities.
PNG pictures are superior to GIF images in several aspects, including the inclusion of an 8-bit transparency channel that allows the image's color to shift from opaque to transparent, whereas GIF images only support entirely opaque or fully transparent pixels. Palettes of 24-bit RGB color, RGB pictures, or greyscale or RGB images are all supported by PNG. Because PNG was designed to convey pictures over the Internet rather than for professional graphics, it does not support additional color models such as CMYK.
