7-Zip is a file archiver with a high compression ratio.

Archiver Mozilla Firefox Google Earth; 65 files 85 280 391 bytes 483 files 110 700 519 bytes; Compressed size Ratio Compressed size Ratio; 7-Zip 9.35-mx: 39 357 375: 100%: 15 964 369: 100%: WinRAR 5.20-m5 -s -ma5 -md128m: 41 789 543: 106%: 17 035 432: 107%. WinRAR 5.91 Compress, Encrypt, Package and Backup with only one utility. Over 500 million users worldwide make WinRAR the world's most popular compression tool today. There is no better way to compress files for efficient and secure file transfer, faster e-mail transmission and well organized data storage and also a solution for business.

Download 7-Zip 19.00 (2019-02-21) for Windows:

Download 7-Zip 20.02 alpha (2020-08-08) for Windows:

Actually, you can't remove password protection from an already protected RAR archive with WinRAR program. But you can extract archive to a folder, and then add all files to a new RAR archive without password. If you do not know the password, you need to recover it first. Upload the file to our website and wait until we complete the work.

License

7-Zip is free software with open source. The most of the code is under the GNU LGPL license. Some parts of the code are under the BSD 3-clause License. Also there is unRAR license restriction for some parts of the code. Read 7-Zip License information.

You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip.

The main features of 7-Zip

• 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

7-Zip works in Windows 10 / 8 / 7 / Vista / XP / 2019 / 2016 / 2012 / 2008 / 2003 / 2000.

p7zip - the port of the command line version of 7-Zip to Linux/Posix.

On 7-Zip's SourceForge Page you can find a forum, bug reports, and feature request systems.

Compression ratio

We compared 7-Zip with WinRAR 5.20.

FILE SETS: Mozilla Firefox 34.0.5 for Windows and Google Earth 6.2.2.6613 for Windows.

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 7-Zip compresses to zip format 2-10% better than most of other zip compatible programs.

If you’ve ever download large packages of files split up into a batch of RAR files, you may have had the situation where the RAR can’t be expanded due to an error.

If all the files are complete they should have the same number of bytes (except the last file which will likely be smaller than the others), then it is possible some data was corrupted.

RAR files usually contain a repair segment within them. They also contain error checking data (CRC data) in them. This means you can test an RAR file for corruption, and it means you can often repair a RAR file that won’t extract. Of course if any of the files in batch are incomplete a repair won’t be possible. If the files are exactly 100 MB each, and you have one in the batch that is say 99.999 MB then the file is complete. You may be able to resume the download or you may have to re-download that file. If, however, the files are all complete but one or more have errors, they could likely be repaired.

Here’s how to do it.

Step 1

Follow the instructions in this article to install RAR and UNRAR.

Step 2

Follow the instructions in this article to test the archive for possible damage / corruption. After that, you will have now identified which files in the archive set or batch are damaged.

Step 3

Run Terminal.app (type Terminal into Spotlight search).

With all the RAR and UNRAR commands, any time files will be generated you need to first change the active directory (in Terminal) to the location where you want the output files to go. So the first command (cd) in the following example is for that purpose.

Type in the following into Terminal at the command line:

Note, there is a space before and after the free-standing “r“. So it’s rar(space)r(space) – don’t hit enter just yet.

TIP: Also remember you can simply drag folders and files from Finder into Terminal and their full path will magically appear in Terminal. It saves having to type long paths and avoids making errors.

Go to finder and locate the first damaged file you found in the RAR test you performed in Step 2.

Grab the file in Finder and drag it to Terminal. You should now see the full path of the file appear after the rar r part you typed. It will look something like this:

Hit enter and watch RAR do its work. If the file is repaired you’ll see output along this lines of the following:

If you see “Done” and all the Sector lines say, “data recovered” at the end, then your file should be complete repaired. Nice, that’ll save you from having to download it again.

Once you’re done with the repair you may need to copy the repaired files into the folder with the rest of the RAR archive files. You will be prompted to replace the existing (damaged) files. Either rename them first, or move them, or simply let them be replaced with the repaired versions.

Rar Archiver For Mac

You’re now ready to do the extraction. You can use one of the many Mac GUI archive tools or you can do it in the command line using the instructions here in this past article.