Portable Network Graphics is a bitmapped image format that employs lossless data compression. PNG was created to improve upon and replace GIF as an image-file format not requiring a patent license. The PNG acronym is optionally recursive, unofficially standing for PNG's Not GIF.
PNG supports palette-based images (with palettes of 24-bit RGB or 32-bit RGBA colors), grayscale images (with or without alpha channel), and RGB[A] images (with or without alpha channel). PNG was designed for transferring images on the Internet, not for print graphics, and therefore does not support non-RGB color spaces such as CMYK.
PNG supports transparent backgrounds, which makes it a popular and common choice amongst image designers.
It is possible to create animated PNG images using APNG.
PNG files nearly always use file extension "
PNG" or "
png" and are assigned MIME media type "
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