PNG

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A PNG image with an 8-bit transparency layer (top), overlayed onto a chequered background (bottom).

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PNG (Portable Network Graphics) is a lossless bitmap image format. PNG was created to both improve upon and replace the GIF format with an image file format that does not require a patent license to use. PNG is officially pronounced as "ping" ({{IPA|/p??/}} in IPA), but it is often just spelled out — possibly to avoid confusion with the internet tool ping. PNG is supported by the libpng reference library, a platform independent library that contains C functions for handling PNG images.

Related Topics:
Lossless - Bitmap - Image format - GIF - Patent - IPA - Ping - Libpng - Library - C

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PNG files nearly always use the file extensions PNG and png and are assigned the MIME media type image/png (approved on October 14 1996).

Related Topics:
MIME - October 14 - 1996

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