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PeaZip is a free cross-platform gz file archiver application that provides an unified portable GUI for many Open Source technologies like 7-Zip, FreeArc, PAQ, UPX... free alternative to WinRar, WinZip and similar proprietary software.
- Create 7Z, ARC, Brotli, BZ2, GZ, *PAQ, PEA, QUAD/BALZ, TAR, UPX, WIM, XZ, ZIP, Zstandard files
- Open and extract ACE, ARJ, CAB, DMG, ISO, LHA, RAR, UDF, ZIPX files and more, over 200 archive types supported
Features of PeaZip includes: archives opener and extractor, batch creation and extraction of multiple archives at once, convert files, create self-extracting archives, split and join files, strong encryption with two factor authentication, encrypted password manager, secure deletion, find duplicate files, calculate hash and checksum, export job definition as script. |
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GZ extension designates a single file compression format, created for GZip (GNU Zip or 'gratis Zip') project, started in 1992 by Jean-Loup Gailly and Mark Adler in order to provide a free replacement for proprietary / commercial data compression solutions.
Compression is based on DEFLATE algorithm (also used as default algorithm in PKZip/WinZip's .ZIP format), a combination of Lempel-Ziv coding (LZ77) and Huffman coding.
Deflate is obiquitously employed as fast (and light in resources) compression algorithm (as in zlib / PNG lossless compression and Zopfli project), and recently is being surpassed in speed by new actively developed projects as Google's Brotli and Facebook's Zstandard providing either superior compression ratio at high compression levels, and faster, near real time compression and extraction speed at whith lower settings, while retaining a comparable compression ratio to Deflate.
7-Zip (and PeaZip, which handles zip and gzip files through Open Source 7-Zip / p7Zip binary backend) use an custom optimized DEFLATE implementation producing better compression ratios than standard reference DEFLATE implementation, keeping full compatibility with other compression utilities working on .gzip files, but using more processor time (gzip compression and extraction is however very fast, and CPU/RAM-light, for today's machines capabilities).
PeaZip has full support for GZip standard, including compression, listing, testing, and extraction. Read also: how to create and open GZ files
When it is recommended to use GZ format: GZip is usually employed for compressing TAR packages (meant for distribution or backup) on Linux and other Unix-like systems.
GZip Deflate excels in fast compression but recent faster alternatives as Brotli and Zstandard are now available and increasily supported.
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Gzip's GZ file format lacks file archiving feature - it can compress each single file, but cannot consolidate multiple input file in a single (compressed) container archive - for that reason it is commonly used on Unix/Linux world to compress TAR archives (as well as Brotli .BR, BZip2 .BZ2, LZMA .XZ, Zstandard .ZST...) - archiving format which can consolidate multiple files in a single package and preserve filesystem information (file attributes, date/time etc), but lacks compression capabilities - producing TGZ file (if single file extension convention is used), alternatively identified by TAR.GZ extension if multiple file extension convention is used.
Read more about .gz extension: GZip compression program and GZ file type page on Wikipedia, and on GnuZip domain.
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| .GZ | Authors: Jean-Loup Gailly, Mark Adler, 1992
limited to 1 single file as input
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| SPEED GZ format features very high speed, due fast and lightweight compression algorithm, not encumbered by extra features, so it is ideal to quickly compress large packages or backup.
Modern alternatives as Brotli and Zstandard recently appeared, providing better than Deflate compression / decompression speed at comparable compression ratio.
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| COMPRESSION RATIO GZ compressed files features low compression ratio. GNUZip employs a classic Deflate file compressor, comparable to ZIP and PEA, but inferior to BZip2 or modern compressors as 7Z and RAR format.
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| ADVANCED OPTIONS
GZip standard is meant only to provide single file compression, other features including archival are out of its scope.
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| RELATED & SIMILAR PAGES |
| WORK WITH GZIP FILES COMPRESSION
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| FILE COMPRESSION BENCHMARKS
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WHAT IS 7Z FORMAT
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| WHAT IS ZIPX FORMAT
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| WHAT IS WINACE ACE FILE FORMAT
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| WHAT ARE BZ2 FILES
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| COMPRESS TAR ARCHIVES TO TGZ
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BROTLI BR COMPRESSED FILES
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| WHAT ARE RAR ARCHIVES
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| WHAT ARE TAR TGZ TAR.GZ FILE EXTENSIONS
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| WHAT IS WIM FILE FORMAT
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WHAT ARE ZIP ARCHIVES
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| WHAT IS FILE COMPRESSION
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| SOLID COMPRESSION ADVANTAGES |
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FAQ > Archive file types > What are GZ files and GZip Deflate compression
Topics and search suggestions about what is gz file format extension, what is Deflate Gzip compression algorithm (GnuZip), what are GZ compressed files features and specifications, characteristics, advantages and disadvantages compared to other pure file compression formats like Brotli, BZ2, XZ, and Zstandard:
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