Libpng

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 15 years. libpng is dependent on zlib for data compression and decompression routines. libpng is released under the libpng license, a permissive free software ... More
Edit and Show details

Add or delete facts, download data in JSON or RDF formats, and explore topic metadata.

Freebase Logo
What is Freebase?

Freebase is a huge collection of facts, built by people like you. Freebase connects facts in ways other sites can't, giving you new ways to explore millions of subjects.
You can help improve it!