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PeaZip, free archiver utility, Open Source WinRar / WinZip alternative for Windows and Linux.
Compress to 7Z, ARC, BZ2, GZip, PAQ, PEA, self-extracting archives, TAR, WIM, XZ, ZIP files.
Open 150+ file types, including ACE, CAB, DMG, ISO, RAR, UDF, ZIPX format.
Extract, create and convert archives, split / join files, strong encryption, encrypted password manager, secure delete, find duplicate files, compute hash, export job definition as script to automate backup / restore.

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free rar archiver software

Free RAR archiver, create .rar files


How to compress to RAR file format


How to compress to RAR file format


RAR compression standard


RAR
is a popular data archival and compression format introduced for WinRARrar file compression software (Eugene Roshal, 1995), file archive utility released for MS Windows operating systems only.
RAR compression is based on Lempel-Ziv LZSSLempel Ziv compression and prediction by partial matchingPPM compression PPMd/PPMII (Dmitry Shkarin), which provides very good compression ratio. The format also features data recovery capabilities (if optional recovery records are used while creating the archive), and optional AES based encryption.

PeaZip, freeware and open source archiver utility, can browse, test and extract RAR files on Linux and Windows, using the Open Source code written by Igor Pavlov in 7-Zipfree rar file archiver and its POSIX port p7zip project.

archive to rar format

No free software utility is available for create RAR compressed files: UNRAR is available as free and open source software for allowing extraction of RAR archives both on Linux and Microsoft Windows with the clause of not reverse engineering the code for implementing RAR compression.
The non reverse engineering clause about the RAR compression algorithm apply as well for any rewritten version, so no free RAR compressor can be created.

Consequently, due to RAR's license constrains, no free software can be written to be natively capable of writing RAR archives (which is required both for RAR archive creation, update and repairing), unless calling Windows-only WinRar's executables (i.e. rar.exe), that requires having WinRar (shareware, free for 40 days only) downloaded and installed as a separate product.
Please note that WinRar license's time trial legal limitations apply to any part of the package (as i.e. rar.exe) as well, even if it does not display the warning screen as the main WinRar's GUI executable.


RarLabs rar.exe compressor


Creation of RAR archives from PeaZip

With WinRar installed in the system, you can use PeaZip's "Custom" archive type interface to use rar.exe to create RAR format archives through PeaZip's GUI:
  1. chose "Custom" format in compression dialog and the first time go to "Advanced" tab to tell PeaZip how to use the executable
  2. identify where the rar.exe executable is saved in your system, and enter it in "Executable" field
  3. write a (which stands for create archive for rar.exe command line syntax) in "Parameters" filed
  4. select the second entry in "Syntax" dropdown menu: "parameters, output, input", so rar.exe will be able to parse PeaZip's frontend commands
Now any time you will select "Custom" format compression PeaZip will automatically use the syntax rar.exe a nameofthearchive nameoftheinputfiles

Please note that rar.exe command line syntax is not a 1:1 replacement of WinRar features, especially worth of notice is that "a" command creates the archive storing full paths (and creation storing relative paths option is not even featured) while WinRar GUI application creates by default archives storing relative paths.

Topics: create rar archives, compress to RAR file format, freeware RAR utility, rar compression algorithm, add files to .RAR package, WinRar archiving function, RarLabs algorithm, how to rar wiki, rar compressor.

Related articles: Open and extract RAR files, Read encrypted files, How to encrypt files?Convert existing archives, 7Z files, Extract ACE files, Unpack CAB files, How to Zip/Unzip files, Extract ISO files, TAR files, Extract ZIPX files

FAQ > Tips and tricks > How to compress files with RAR algorithm





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