Home
7z Format
LZMA SDK
Download
FAQ
Support
Links
English Afrikaans Bulgarian Chinese Simpl. Chinese Trad. Esperanto French German Hungarian Japanese Persian Polish Portuguese Brazil Russian Spanish Ukrainian | # LZMA SDK (Software Development Kit) The LZMA SDK provides the documentation, samples, header files, libraries, and tools you need to develop applications that use LZMA compression.
Link | Size | Date | Version | Description
--- | --- | --- | --- | ---
Download | 500 KB | 2010-11-18 | 9.20 | LZMA SDK (C, C++, C#, Java)
Download | 500 KB | 2011-04-19 | 9.22 Beta | LZMA SDK (C, C++, C#, Java)
Download | 18 KB | 2013-07-28 |  | LZMA Specification (Draft)
What's new: 9.20: New small SFX module for installers. 9.11: PPMd support. 9.04: LZMA2 and XZ support. 4.62: Some fixes. LZMA SDK is placed in the public domain. 4.58: Speed optimizations. New ANSI-C code for LZMA compression. 4.57: Speed optimizations. Some fixes. 4.49: .7z ANSI-C decoder was improved. C++ code for .7z archive handling was included. LZMA is the default and general compression method of 7z format in the 7-Zip program. LZMA provides a high compression ratio and very fast decompression, so it is very suitable for embedded applications. For example, it can be used for ROM (firmware) compressing. LZMA SDK includes: C++ source code of LZMA Encoder and Decoder C++ source code for .7z compression and decompression (reduced version) ANSI-C compatible source code for LZMA / LZMA2 / XZ compression and decompression ANSI-C compatible source code for 7z decompression with example C# source code for LZMA compression and decompression Java source code for LZMA compression and decompression lzma.exe for .lzma compression and decompression 7zr.exe to work with 7z archives (reduced version of 7z.exe from 7-Zip) ANSI-C and C++ source code in LZMA SDK is subset of source code of 7-Zip. LZMA features: Compression speed: 2 MB/s on 2 GHz dual-core CPU. Decompression speed: 20-30 MB/s on 2 GHz Intel Core2 or AMD Athlon 64. 1-2 MB/s on 200 MHz ARM, MIPS, PowerPC or other simple RISC CPU. Small memory requirements for decompression: 8-32 KB + DictionarySize Small code size for decompression: 2-8 KB (depending on speed optimizations) The LZMA decoder uses only CPU integer instructions and can be implemented for any modern 32-bit CPU (or, on a 16-bit CPU with some conditions). ## License LZMA SDK is placed in the public domain. ## LZMA Links LZMA at Wikipedia Port of LZMA SDK for JAVA from independent developer Port of LZMA SDK to Pascal (Delphi, Kylix and Freepascal) PyLZMA: Python bindings for LZMA XZ Utils / LZMA utils LZMA Streams in Java LZMA Benchmark results for different CPUs Copyright (C) 2013 Igor Pavlov.