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Lzip overview

Lzip is a lossless data compressor with a user interface similar to the one of gzip or bzip2. Lzip can compress about as fast as gzip (lzip -0), or compress most files more than bzip2 (lzip -9). Decompression speed is intermediate between gzip and bzip2. Lzip is better than gzip and bzip2 from a data recovery perspective.

The lzip file format is designed for data sharing and long-term archiving, taking into account both data integrity and decoder availability:

  • The lzip format provides very safe integrity checking and some data recovery means. The lziprecover program can repair bit-flip errors (one of the most common forms of data corruption) in lzip files, and provides data recovery capabilities, including error-checked merging of damaged copies of a file.
  • The lzip format is as simple as possible (but not simpler). The lzip manual provides the source code of a simple decompressor along with a detailed explanation of how it works, so that with the only help of the lzip manual it would be possible for a digital archaeologist to extract the data from a lzip file long after quantum computers eventually render LZMA obsolete.
  • Additionally the lzip reference implementation is copylefted, which guarantees that it will remain free forever.

What’s new in version 1.20

Updated on Sep 21 2018

Version 1.20:
  • Added new option '--loose-trailing'
  • Improved corrupt header detection to HD=3
  • Show corrupt or truncated header in multimember file
  • Option '-S, --volume-size' now keeps input files
  • Adjust dictionary size for each member
  • Replaced 'bits/byte' with inverse compression ratio in output
  • Show progress of decompression at verbosity level 2 (-vv)
  • Show progress of (de)compression only if stderr is a terminal
  • Show final diagnostic when testing multiple files
  • Do not add a second .lz extension to the arg of -o
  • Show stored sizes also in hex
  • Show dictionary size at verbosity level 4 (-vvvv)
  • lzip.texi: Added chapter 'Output'





103 KB



App requirements

  • Intel 64
  • Intel 32
  • Mac OS X 10.2.8 or later
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Sep 21 2018
Sep 21 2018
Version: 1.20
Interesting that this come packaged in a gzip archive.
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