Overview

What is zlib?

Zlib : A compression library

In depth

A closer look at zlib

The Zlib library is a general purpose data compression library compatible with the gzip format. The code is thread safe, assuming that the standard librar y functions used are thread safe, such as memory allocation routines. It provides in-memory compression and decompression functions, including integrity checks of the uncompressed data. Compression can be done in a single step if the buffers are large enough or can be done by repeated calls of the compression function. In the latter case, the application must provide more input and/or consume the output (providing more output space) before each call. The library also supports reading and writing files in gzip(1) (.gz) for mat with an interface similar to that of stdio. The library does not install any signal handler. The decoder checks the consistency of the compressed data, so the librar y should never crash even in the case of corrupted input.

Verdict

Should you download zlib?

zlib runs on DOS and is available under the Freeware license — the installer is 678 KB. We’ve catalogued it under DLLs and Libraries.

Verified clean. Every zlib build on SoftLookup is scanned for viruses, spyware, adware, trojans and backdoors. We re-test on every update.

zlib specifications

Category: DLLs and Libraries
Publisher: Jean-loup Gailly and Mark Adler
Last updated: Feb 24, 2025
License: Freeware
Operating system: DOS
File size: 678 KB
Price: Free
Page views: 1062

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zlib

What is zlib?

A closer look at zlib

Should you download zlib?

zlib specifications

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