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7-Zip 24.01 Beta – Free File Archiver

7-Zip 24.01 Beta – Free File Archiver
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Description
Changelog
Specifications

7-Zip is an open source file archiver with the high compression ratio predominantly for the Microsoft Windows operating system.

It operates either as a command line program or with a graphical user interface. It also features integration with the Windows shell environment.

Compression ratio results are very dependent upon the data used for the tests. Usually, 7-Zip compresses to 7z format 30-70% better than to zip format. And it compresses to zip format 2-10% better than most of other zip compatible programs.

7-Zip is free software, developed by Igor Pavlov and distributed under the GNU LGPL license. This file archiver works on all Windows operating systems, from Windows NT to 10 (32-bit and 64-bit).

The main features of 7-Zip:

  • High compression ratio in new 7z format with LZMA compression and LZMA2 compression
  • For ZIP and GZIP formats, the provided compression ratio is 2-10 % better than the ratio provided by PKZip and WinZip
  • Strong AES-256 encryption in 7z and ZIP formats
  • Self-extracting capability for 7z format
  • Integration with Windows Shell
  • Powerful File Manager
  • Powerful command line version
  • Plugin for FAR Manager
  • Localizations for 87 languages
  • Supported formats:
    • Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
    • Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR and Z.

Changes in 7-Zip 24.01 Beta (2024-01-31):

  • Added zst icon.
  • Fixed bug with 7-Zip File Manager crashing.

Changes in 7-Zip 24.00 Beta (2024-01-30):

  • Now can unpack ZSTD archives (.zst filename extension).
  • Now can unpack ZIP, SquashFS and RPM archives that use ZSTD compression method.
  • Now supports fast hash algorithm XXH64 that is used in ZSTD.
  • Now can unpack RAR archives (that use larger than 4 GB dictionary) created by new WinRAR 7.00.
  • Now can unpack DMG archives that use XZ (ULMO/LZMA) compression method.
  • Speed optimizations for archive unpacking: rar, cab, wim, zip, gz.
  • Now can unpack NTFS images with cluster size larger than 64 KB.
  • Now can unpack MBR and GDP images with 4 KB sectors.
  • Speed optimizations for hash caclulation: CRC-32, CRC-64, Blake2sp.
  • Fixed bug: 7-Zip for Linux could fail for multivolume creation in some cases.
  • Some bugs were fixed.

Changes in 7-Zip 23.01 (2023-06-20):

  • The page “Language” in 7-Zip’s menu Tools/Options now shows information about selected translation, including the number of translated lines.
  • Some bugs were fixed.

Changes in 7-Zip 23.00 Beta (2023-05-07):

  • 7-Zip now can use new ARM64 filter for compression to 7z and xz archives. ARM64 filter can increase compression ratio for data containing executable files compiled for ARM64 (AArch64) architecture.
    Also 7-Zip now parses executable files (that have exe and dll filename extensions) before compressing, and it selects appropriate filter for each parsed file:

    • BCJ or BCJ2 filter for x86 executable files,
    • ARM64 filter for ARM64 executable files.
      Previous versions by default used x86 filter BCJ or BCJ2 for all exe/dll files.
  • Default section size for BCJ2 filter was changed from 64 MiB to 240 MiB. It can increase compression ratio for executable files larger than 64 MiB.
  • UDF: support was improved.
  • cpio: support for hard links.
  • Some changes and optimizations in WIM creation code.
  • When new 7-Zip creates multivolume archive, 7-Zip keeps in open state only volumes that still can be changed. Previous versions kept all volumes in open state until the end of the archive creation.
  • 7-Zip for Linux and macOS now can reduce the number of simultaneously open files, when 7-Zip opens, extracts or creates multivolume archive. It allows to avoid the failures for cases with big number of volumes, bacause there is a limitation for number of open files allowed for a single program in Linux and macOS.
  • There are optimizations in code for 7-Zip’s context menu in Explorer: the speed of preparing of the menu showing was improved for cases when big number of files were selected by external program for context menu that contains 7-Zip menu commands.
  • There are changes in code for the drag-and-drop operations to and from 7-Zip File Manager.
    And the drag-and-drop operation with right button of mouse now is supported for some cases.
  • The bugs were fixed:
    • ZIP archives: if multithreaded zip compression was performed with more than one file to stdout stream (-so switch), 7-zip didn’t write “data descriptor” for some files.
    • ext4 archives: 7-Zip couldn’t correctly extract symbolic link to directory from ext4 archives.
    • HFS and APFS archives: 7-Zip incorrectly decoded uncompressed blocks (64 KiB) in compressed forks.
    • Some another bugs were fixed.

Homepage – https://www.7-zip.org

Supported Operating Systems:

  • Windows XP, Vista, 7, 8, 8.1, 10, 11 (32-bit, 64-bit).
  • Windows Server 2003, 2008, 2012, 2016, 2019.

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