While Windows 11 has added native support for opening some 7z files, using the official software is often more reliable. How to install and use 7zip (And size comparison!)
A file named is a compressed archive created using 7-Zip or a compatible utility. The .7z extension indicates it uses the 7z format, which is known for higher compression ratios than standard ZIP files. Key Characteristics of 7z Files
: Typically compresses data 30–70% better than the standard ZIP format.
: It can handle very large files and supports multiple compression methods like LZMA and LZMA2.