Sample Files
Details
RAR
Roshal Archive
About
What is .RAR?
.rar is a compressed archive format offering strong compression, error recovery, encryption, and multi-volume splitting. It is widely used for storing, sharing, and distributing large sets of files.
History
Origin of RAR
The format (Roshal ARchive) was created by Russian software engineer Eugene Roshal in 1993. It is a proprietary archive format known for strong compression ratios, robust error recovery, and multi-volume archive support. Development and licensing of RAR technology are managed by win.rar GmbH. RAR became widely used through the popular Windows software WinRAR, which implements advanced compression algorithms and features such as recovery records and solid archiving. Although proprietary, the RAR format is documented enough for extraction tools like 7-Zip and unrar to support decompression.
Learn more at: https://www.rarlab.com
Benefits
Higher compression ratios than ZIP in many cases
Supports multi-volume archives for splitting large files
Built-in error recovery and data redundancy options
AES-128 encryption for secure archives
Efficient handling of large file sets
Usage
Open `.rar` using WinRAR, 7-Zip, WinZip, or unrar utilities
Extract multi-volume archives by keeping all `.part#.rar` files in the same folder
Create RAR archives using WinRAR (creation is proprietary to RAR tools)
Use encryption features to password-protect sensitive files
Use Cases
Common Use Cases
Here are the use cases for this file extension
File Compression & Storage
RAR efficiently compresses large collections of files for archiving.
Long-Distance File Transfers
Recovery records help fix corrupted parts of an archive.
Splitting Large Files
Used to break huge files into multi-part archives (e.g., `.part1.rar`).
Compatibility
Supported By
This extension is compatible with the following platforms.
Windows (WinRAR, 7-Zip)
macOS (Keka, The Unarchiver)
Linux (unrar, 7-Zip)
Android (RAR app, ZArchiver)
iOS (RAR apps & file managers)
Web Tools (online extractors)
More Details
Technical Specs
Here are some technical details about this extension
File Extension
.rar
MIME Type
application/vnd.rar
Compression Type
Proprietary RAR compression algorithms
Encryption
AES-128
Multi-Volume Support
Yes (split archives: .part1.rar, .part2.rar, etc.)
Recovery Records
Yes (optional redundancy for damaged archives)
Typical Use
Compressed backups, file distribution, multi-part archives
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Got Questions?
Get answers to common questions
RAR compression is proprietary. Tools like 7-Zip can extract files, but only official utilities such as WinRAR can create them.
RAR typically offers better compression ratios, recovery features, and multi-volume support compared to ZIP. ZIP, however, has broader built-in OS support.
Recovery records add redundancy to an archive, allowing damaged files to be repaired—particularly useful for long-distance transfers or older storage media.