7-Zip is a powerful file archiver with a high compression ratio. This free software is open-source, making it an excellent choice for both personal and commercial use without the need for registration or payment. As a leading compression software, 7-Zip supports a wide range of formats and offers many advanced features.
Guide: Using 7-Zip for File Compression and Extraction
These 7-Zip features make it one of the most versatile and efficient file archivers available.
7-Zip is compatible with a wide range of Windows versions:
This extensive compatibility ensures that users on almost any Windows software platform can benefit from 7-Zip's capabilities.
7-Zip is free software, distributed under the GNU LGPL license. Some parts of the code are covered by the BSD 3-clause license, and there are unRAR license restrictions for certain parts of the code. For detailed information, read the 7-Zip License information.
For additional support, visit 7-Zip's SourceForge Page. Here you can find forums, bug reports, and feature request systems to help you get the most out of 7-Zip.
The 7z format is the new archive format, providing a high compression ratio and many advanced features. The main features of the 7z format include:
7z has an open architecture, so it can support any new compression methods. Currently, the following compression methods are integrated into 7z: LZMA, LZMA2, PPMD, BZip2, Copy
7z also supports filters that improve the compression ratio of the main compression method. Currently, the following filters are integrated into 7z:
LZMA is the default and general compression method of the 7z format. The main features of the LZMA method include:
7-Zip also supports encryption with the AES-256 algorithm. This algorithm uses a cipher key with a length of 256 bits. To create that key, 7-Zip uses a derivation function based on the SHA-256 hash algorithm. A key derivation function produces a derived key from a text password defined by the user. To increase the cost of exhaustive search for passwords, 7-Zip uses a large number of iterations to produce the cipher key from the text password.
24.06 2024-05-26 ------------------------- - The bug was fixed: 7-Zip could not unpack some ZSTD archives. 24.05 2024-05-14 ------------------------- - New switch -myv={MMNN} to set decoder compatibility version for 7z archive creating. {MMNN} is 4-digit number that represents the version of 7-Zip without a dot. If -myv={MMNN} switch is specified, 7-Zip will only use compression methods that can be decoded by the specified version {MMNN} of 7-Zip and newer versions. If -myv={MMNN} switch is not specified, -myv=2300 is used, and 7-Zip will only use compression methods that can be decoded by 7-Zip 23.00 and newer versions. - New switch -myfa={FilterID} to allow 7-Zip to use the specified filter method for 7z archive creating. - New switch -myfd={FilterID} to disallow 7-Zip to use the specified filter method for 7z archive creating. - Some bugs were fixed. 24.04 2024-04-05 ------------------------- - New menu item in 7-Zip File Manager: "Tools / Delete Temporary Files...". This menu item opens a window showing temporary folders and files created by 7-Zip in the user's "Temp" folder on a Windows system. In this window, the user can delete temporary files. 24.03 2024-03-23 ------------------------- - 7-Zip now can use new RISCV filter for compression to 7z and xz archives. RISCV filter can increase compression ratio for data containing executable files compiled for RISC-V architecture. - The speed for LZMA and LZMA2 decompression in ARM64 version for Windows was increased by 20%-60%. - 7-Zip GUI and 7-Zip File Manager can ask user permission to unpack RAR archives that require big amount of memory, if the dictionary size in RAR archive is larger than 4 GB. - new switch -smemx{size}g : to set allowed memory usage limit for RAR archive unpacking. RAR archives can use dictionary up 64 GB. Default allowed limit for RAR unpacking is 4 GB. - 7zg.exe (7-Zip GUI): -y switch disables user requests and messages. - 7-Zip shows hash methods XXH64 and BLAKE2sp in context menu. - -slmu switch : to show timestamps as UTC instead of LOCAL TIME. - -slsl switch : in console 7-Zip for Windows : to show file paths with linux path separator slash '/' instead of backslash separator '\'. - 7-Zip supports .sha256 files that use backslash path separator '\'. - Some bugs were fixed. 24.01 2024-01-31 ------------------------- - 7-Zip now can unpack ZSTD archives (.zst filename extension). - 7-Zip now can unpack ZIP, SquashFS and RPM archives that use ZSTD compression method. - 7-Zip now supports fast hash algorithm XXH64 that is used in ZSTD. - 7-Zip now can unpack RAR archives (that use larger than 4 GB dictionary) created by new WinRAR 7.00. - 7-Zip now can unpack DMG archives that use XZ (ULMO/LZMA) compression method. - 7-Zip now can unpack NTFS images with cluster size larger than 64 KB. - 7-Zip now can unpack MBR and GPT images with 4 KB sectors. - Speed optimizations for archive unpacking: rar, cab, wim, zip, gz. - Speed optimizations for hash caclulation: CRC-32, CRC-64, BLAKE2sp. - The bug was fixed: 7-Zip for Linux could fail for multivolume creation in some cases. - Some bugs were fixed.
Téléchargements | 0 |
Téléchargements hebdo. | 17 |
Editeur | Igor Pavlov |
Par | cocochepeau |
Créé le | 07 Juin 2024 |
Dernière mise à jour | 07 Juin 2024 |
Catégorie | Compression |
Système d'exploitation | Multiplateforme |
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