Il s’agit d’un puissant utilitaire de compression/décompression gratuit. Très utile, il permet de compresser en zip avec un taux de compression bien plus élevé que les autres compresseurs de format. De plus son célèbre format 7z permet de compresser jusqu’à 50% de + que le zip classique sur certaines archives et davantage que le format RAR (de Winrar). Installer la dernière version est indispensable, car de nombreux fichiers disponibles sur Emufrance sont recompressés avec les derniers algorithmes. Si une ancienne version est utilisée, il se peut que parfois les fichiers ne soient plus décompressibles.
 

 
Il est également capable de décompacter beaucoup de formats d’installeurs que plusieurs programmes utilisent (ce qui évite parfois une installation forcée). Très recommandé si vous voulez utiliser ZipMax, outil de l’auteur de ClrMAMEPro.
 
Les améliorations depuis la 23.01 sont les suivantes:
 
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 GDP 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.

 
NB: Si des anciennes archives avaient des problèmes pour être ouvertes/extraites (ce qui devrait être très rare et dans des cas spécifiques), lire cette page.

 

Télécharger 7-Zip (x86) v24.05 (1.3 Mo)

Télécharger 7-Zip (x64) v24.05 (1.5 Mo)

Site Officiel

En savoir plus…