7Zp file archiver2.1.1

App Overview

7z is the new archive format, providing high compression ratio.

The main features of 7z format:
Open architecture
High compression ratio
Strong AES-256 encryption
Ability of using any compression, conversion or encryption method
Supporting files with sizes up to 16000000000 GB
Unicode file names
Solid compressing
Archive headers compressing

Main Features

High compression ratio in 7z format with LZMA and LZMA2 compression
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.
For ZIP and GZIP formats, 7-Zip provides a compression ratio that 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

LZMA is default and general compression method of 7z format. The main features of LZMA method:
High compression ratio
Variable dictionary size (up to 4 GB)
Compressing speed: about 1 MB/s on 2 GHz CPU
Decompressing speed: about 10-20 MB/s on 2 GHz CPU
Small memory requirements for decompressing (depend from dictionary size)
Small code size for decompressing: about 5 KB
Supporting multi-threading and P4's hyper-threading

Frequently Asked Questions

Can I use 7-Zip in a commercial organization?
Yes, 7-Zip is free software. You can use it on any computer. You don't need to register or pay for 7-Zip.

Why can't 7-Zip open some RAR archives?
7-Zip 9.20 supports RAR 2/3/4 formats only and doesn't support RAR5 archives. But latest versions of 7-Zip supports RAR5 archives.

Why can't 7-Zip open some ZIP archives?
In 99% of these cases it means that the archive contains incorrect headers. Other ZIP programs can open some archives with incorrect headers, since these programs just ignore errors.

How can I recover corrupted 7z archive?
You can open archive and you can see the list of files, but when you press Extract or Test command, there are some errors: Data Error or CRC Error. When you open archive, you get message "Can not open file 'a.7z' as archive"

7-Zip Theme Manager is a software utility that was built in order to aid 7-Zip users to switch between several themes with just a few clicks.

The conveniences of a portable app

You are not required to go through a setup process, as this product is portable. This also means that, unlike its installer counterparts, it is not going to update the Windows registry and Start menu/screen with new entries and no leftovers will remain on the hard disk after its removal.Another aspect that should be mentioned here is that you can easily take 7-Zip Theme Manager anywhere with you and run it on any PC, by simply copying the program files to a removable storage device.

Settings you can tweak

This tool enables you to access several themes, specifically tailored for the toolbar and icons used in 7-Zip. A list of these is displayed in the main window, while you can also preview them, along with information regarding them such as name, license, author and website.It is possible to activate a theme with just a click of the button, as well as upload an SFX icon using an ICO format from your hard drive.

Conclusion and performance

It does not hamper the system’s performance as the number of resources necessary is not that significant. All tasks are performed in quite a timely manner, the interface is suitable to both power and novice users. However, it has not been updated in a long time and therefore, it does not support the latest versions of 7-Zip.Taking all of this into consideration, 7-Zip Theme Manager proves to be a pretty decent piece of software for people that have old versions of the aforementioned archiving tool.