Portable Network Graphics: Raster Graphics, Image File Formats, Lossless Data Compression, Graphics Interchange Format, Recursive Acronym, RGB Color Model, Usenet Newsgroup

Portable Network Graphics: Raster Graphics, Image File Formats, Lossless Data Compression, Graphics Interchange Format, Recursive Acronym, RGB Color Model, Usenet Newsgroup

High Quality Content by WIKIPEDIA articles! Portable Network Graphics (PNG) is a bitmapped image format that employs lossless data compression. PNG was created to improve upon and replace GIF (Graphics Interchange Format) as an image-file format not requiring a patent license. It is pronounced /?p??/ or spelled out as P-N-G. The PNG acronym is optionally recursive, unofficially standing for ?PNG’s Not GIF?. PNG supports palette-based (palettes of 24-bit RGB or 32-bit RGBA colors), greyscale, RGB, or RGBA images. PNG was designed for transferring images on the Internet, not professional graphics, and so does not support other color spaces (such as CMYK).

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