7z

Overview

7z is the native archive format of 7-Zip. It supports LZMA and LZMA2 compression plus AES-256 encryption, which often produces smaller archives than ZIP at the cost of requiring third-party tools on many systems.

Typical use cases

• High-ratio compression
• Multi-volume archives
• AES-256 encryption
• Software release bundles

Advantages

• Designed for high-ratio compression
• Lossless storage
• Open specification
• Browser support: Requires third-party tools on many platforms

Disadvantages

• Fewer native tools
• Multi-volume sharing can complicate delivery
• Older systems may lack support

How to open or use it

Open 7z files with an application that supports application/x-7z-compressed. Create and edit with 7-Zip and compatible tools. For delivery, use a viewer or converter that reads 7z.