Libpng

Template:Lowercase {{#invoke:Infobox|infobox}}Template:Template other {{#invoke:Check for unknown parameters|check|unknown=Template:Main other|preview=Page using Template:Infobox software with unknown parameter "_VALUE_"|ignoreblank=y| AsOf | author | background | bodystyle | caption | collapsetext | collapsible | developer | discontinued | engine | engines | genre | included with | language | language count | language footnote | latest preview date | latest preview version | latest release date | latest release version | latest_preview_date | latest_preview_version | latest_release_date | latest_release_version | licence | license | logo | logo alt | logo caption | logo class | logo size | logo title | logo upright | logo_alt | logo_caption | logo_class | logo_size | logo_title | logo_upright | middleware | module | name | operating system | operating_system | other_names | platform | programming language | programming_language | qid | released | replaced_by | replaces | repo | screenshot | screenshot alt | screenshot class | screenshot size | screenshot title | screenshot upright | screenshot_alt | screenshot_class | screenshot_size | screenshot_upright | service_name | size | standard | title | ver layout | website }}Template:Main other 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 28 years.<ref name="libpng" /> 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.

Template:As of the latest versions in the 1.6.x and 1.5.x branches were considered as release versions, while 1.4.x, 1.2.x, and 1.0.x were considered as legacy versions getting only security fixes.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> All vulnerability warnings and crash bugs are published on the main page.<ref name="libpng">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

External links

• Template:Github
• Template:Openhub
• A howto on writing PNG images using libpng