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Developer(s) Guy Eric Schalnat,
Andreas Dilger,
Glenn Randers-Pehrson, et al.
Stable release
1.6.28 / January 5, 2017; 25 days ago (2017-01-05)
Development status Active
Written in C
Operating system Cross-platform
Type Image library
License libpng License

libpng is the official Portable Network Graphics (PNG) reference library (originally called pnglib). It is a platform-independent library that contains C functions for handling PNG images. It supports almost all of PNG's features, is extensible, and has been widely used and tested for over 18 years.[1] libpng is dependent on zlib for data compression and decompression routines.

libpng is released under the libpng license, a permissive free software licence, and is free software. It is frequently used in both free and proprietary software, either directly or through the use of a higher level image library.

External links[edit]


  1. ^ Roelofs, Greg. "libpng Home Page". libpng. SourceForge.