The Compress::Zlib module provides a Perl interface to the zlib compression library (see the AUTHORS entry elsewhere in this document for details about where to get zlib). Most of the functionality provided by zlib is available in Compress::Zlib. The module can be split into two general areas of functionality, namely in-memory compression/decompression and read/write access to gzip files. Each of these areas will be discussed separately below. WARNING: The interface defined in this document is alpha and is liable to change.