7-Zip
7-Zip is a free open-source file archiver used to create, open, and extract compressed archives.
It is best known for the 7z format, high compression ratios, strong encryption, and a lightweight desktop and command-line workflow.
What it does
7-Zip is commonly used to:
- Create compressed archives
- Extract existing archives
- Open archive files without fully extracting them first
- Encrypt archives with strong passwords
- Split large archives into smaller parts
Core features
- High compression ratio in the 7z format
- Support for common formats such as ZIP and RAR
- AES-256 encryption for 7z and ZIP archives
- File manager and context menu integration on Windows
- Command-line tools for automation and scripting
- Self-extracting archive support for 7z files
Common use cases
- Compressing folders before storage or transfer
- Extracting ZIP, RAR, and other archive formats
- Password-protecting archives
- Reducing file size before upload or sharing
- Managing archives on Windows, Linux, or macOS
Practical notes
- 7-Zip is especially popular on Windows, but official console builds also exist for Linux and macOS.
- The native 7z format is usually chosen when compression ratio matters most.
- ZIP is often preferred when compatibility matters more than maximum compression.
- 7-Zip can extract RAR archives, but RAR is not its native archive format.
- It is often compared with tools such as WinRAR.
Sources Used
Frequently Asked Questions
Is 7-Zip free?
Yes. 7-Zip is free and open-source software.
Is 7-Zip the same as ZIP?
No. 7-Zip is the application. ZIP is one archive format that 7-Zip can create and extract.
Can 7-Zip open RAR files?
Yes. 7-Zip can extract RAR archives, even though RAR is a different archive format.