Zlib development contributions and issues are best addressed on Nearly all of the questions we get already have anĪnswer in the zlib documentation. Gzip and Zip, namely, the `deflate' method that originated in The compression algorithm used in zlib is essentially the same as that in Gzip(1), the author of the pression FAQ list andĭecompression routines and was the original author of Zip. Technical discussion of both points is available on (LZW can double or triple the file size inĮxtreme cases.) zlib's memory footprint is also independent of the input dataĪnd can be reduced, if necessary, at some cost in compression. Unlike the LZW compression method used in Unix compress(1)Īnd in the GIF image format, the compression method currently used in zlibĮssentially never expands the data. The zlib data format is itself portable across lossless data-compression library for use on virtually any computer hardwareĪnd operating system. General-purpose, legally unencumbered - that is, not covered by any patents You can also look at the complete Change Log.
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