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gzip (GNU zip) is a compression utility designed to be a replacement for compress. Its main advantages over compress are much better compression and freedom from patented algorithms. It has been adopted by the GNU project and is now relatively popular on the Internet.
libpng is the official PNG reference library. It supports almost all PNG features, is extensible, and has been extensively tested for over 17 years. libpng is available as ANSI C source code and requires zlib 1.0.4 or later (1.2.3 or 1.1.4 recommended due to potential security vulnerabilities in ... [More]
zlib is designed to be a free, general-purpose, legally unencumbered -- that is, not covered by any patents -- lossless data-compression library for use on virtually any computer hardware and operating system. The zlib data format is itself portable across platforms. Unlike the LZW compression ... [More]
This is an optimizer for PNG files; it also has the ability to add or delete ancillary PNG chunks. It attempts to reduce the PNG file size by trying various compression methods and selecting the best-performing one.
Tools for experimenting with the Google zopfli compression code with the possibility of interfacing it with pngcrush
The implementation of RFC 1951 -- DEFLATE Compressed Data Format Specification version 1.3 (also RFC 1950 ZLIB and 1952 GZIP). It's written in managed C#. The project has basic compression algorithm implementation as it's described in the RFC.
pnglite is a C library for loading PNG images. It was created as a substitute for libpng in situations when libpng is more than enough. It currently requires zlib for inflate and crc checking and it can read the most common types of PNG images. The library has a small and simple to use interface.
ARX is a archiving file format with advanced features especially designed to meet the requirements of game designers. These features include external data referencing, data synchronization with remote data storages, in-memory merging of multiple archives and arbitrary data items structuring. This ... [More]
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