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FAQ / SUPPORTED FILE FORMATS > RAR FILES
open source rar

Free RAR files utility: open, extract RAR format



RAR FILE FORMAT

OPEN AND EXTRACT RAR FILES

RAR FILES, READ MORE

free rar



RAR is a popular archive format introduced by RarLab program WinRAR (shareware file archiving utility, free for 40 days) for Microsoft Windows platform; the software was ported to Linux (only as extractor) by the same Author, Eugene Roshal. Initial application release dates back to 1995, last RAR5 standard revision is from 2013.

RAR format is well known for the high compression ratio archives (superior compared to zip, comparable with 7z and zipx formats), based on Lempel-Ziv (LZSS) and prediction by partial matching (PPMd, Dmitry Shkarin).

RAR standard also features strong encryption
  • RAR4 revision rely on AES-128 based encryption

  • RAR5 uses AES-256 in CBC mode, with improved key scheduling

Notably, .rar archives provide advanced error correction / data recovery capabilities (recovery records, optional).

  



  

.RAR

Author Eugene Roshal, 1995

SPEED rar extraction

Good, even employing powerful advanced comperssion tecniques, handling the format is remarkably efficient in term of speed.







COMPRESSION RATIO rar format

High, comparable but slightly inferior to 7z.

ADVANCED OPTIONS rar file tool

Excellent. Most notable feature is native support for recovery records, that allows to recover archives from moderate corruption states.






Open and extract RAR files


PeaZip is a free opener and extractor for RAR files, it supports by default RAR browsing, testing and extraction on Linux and Windows, through the Open Source implementation rewritten as free software by Igor Pavlov in 7z/7-Zip and p7zip. This back-end utility, since release 15.06, supports extraction of both legacy .rar files (up to RARv2.9/RAR4 format) and new RAR5 files.

PeaZip users can chose if handling RAR5 format through Open Source 7z/p7zip code (default) or, as alternative extraction engine, through RarLab's unrar binary implementation, which is made available by original Author as freeware, royalty-free and with full sources, but due unrar licensing restrictions (the code cannot be modified in order to obtain a RAR compressor) it is considered not OSI-compliant and it is consequently offered as additional, separate package. UNRAR5 Plugin can be downloaded from Add-ons page.

Create / update RAR file


PeaZip support for this file type is read-only, the application cannot write to .rar file format to create a new file or edit an existing one, unless invoking WinRar' RAR exe as custom compressor, this topic is discussed in RAR compression page.

Due the proprietary nature of the RAR file type (no reverse engineering clause about using sources to create a rar compressor), no royalty free rar tool under Open Source license is known to be able of creation or modification / update of existing rar packages.

Convert RAR files


Even if RAR is an exceptional archival format in terms of features, performances, and active development, it is a good idea to convert rar files into free formats, not encumbered by patents and copyright limitations, such as 7Z or ZIP.
File converter procedure using Convert button extracts and then re-pack input archive files into any write-supported format (7z, arc, pea, tar, zip...), optionally keeping or discarding original archives - either creating an output archive for each individual input item, or consolidating all input data in a single output archive.

While this procedure can i.e. convert rar to zip or 7z, the inverse is not possible (being rar format supported read-only) so i.e. 7z, tar, zip archives cannot be converted in rar files.

Encrypted RAR file extraction


To extract an encrypted .rar file, enter the password in PeaZip clicking the padlock icon rar password in the status bar (in the file/archive browser) or below output address field (in extraction or archiving interfaces), or click Tools > Enter password / keyfile in main menu, or press F9 accelerator key.
Encrypted objects items inside encrypted rar archives are marked by * sign.

Open RAR files

To open a rar file, browse and search content inside the archive:

  • double click the rar archive, if file extension is associated with the PeaZip (default)
  • if rar file type is not associated with PeaZip, right-click on the archive and use system context menu "Open as archive" entry, that will attempt to read any user provided file type regardless file associations

Extract RAR files

Use one of the procedures described below to decompress .rar archives

  • Extract RAR file from the system

    • Select one or more rar archives and use context menu entry "Extract..." to display full extraction screen GUI where to set output path, password, and other options

    • Select one or more archives and use context menu entry Extract here or Extract here (to new folder) for quick extraction with no further confirmation

  • RAR extraction within PeaZip main program

    • Extract button shows full featured archive extraction screen providing access to all options (password, set output path, open output path after extraction, keep or delete original archives, etc) and can send to extraction selected items only

    • Extract all to... button activate a simplified dialog asking for output path only

    • Simply drag & drop desired objects from the application to the system

    • Doubleclick on an archived file to open it in preview mode, i.e. to inspect its content before considering the need for real extraction

Extract a spanned (split) RAR file

Save all the parts of the rar archive in the same directory, then open as usual the first volume of the archive, which usually has R00, R01, or 001 extension - subsequent volumes should have progressively numbered extensions (r02, r03 etc).

RAR files, read more


External online resources: WinRarfree rar official domain, RAR formatrar file format Wikipedia entry, what is error correctionRAR recovery records, 7-Zipopen source rar

Topics and search suggestions: free rar utility, opener, download free WinRar alternative Open Source software, what is .rar file extension wiki, non free rar format licensing, how do I open rar files (handle, decompress, "unzip", read, view content, browse & search compressed data), royalty free rar software, unrar tool, extract rar to new folder, drag and drop rar extraction, .r01 spanned rar archive.



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free rar files utility

PeaZip is a free cross-platform file archiver that provides an unified portable GUI for many Open Source technologies like 7-Zip, FreeArc, PAQ, UPX...
Create 7Z, ARC, BZ2, GZ, *PAQ, PEA, QUAD/BALZ, TAR, UPX, WIM, XZ, ZIP files
Open and extract over 180 archive types: ACE, ARJ, CAB, DMG, ISO, LHA, RAR, UDF, ZIPX files and more...
Features of PeaZip includes extract, create and convert multiple archives at once, create self-extracting archives, split/join files, strong encryption with two factor authentication, encrypted password manager, secure deletion, find duplicate files, calculate hashes, export job definition as script.

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