“7z compresses files 30–70% smaller than ZIP... but requires third-party software to open. ZIP works natively on every OS... Use 7z for archiving and backups; use ZIP for sharing files with others.” compresto.app · 5 months ago
Are you trying to a specific "g.7z" file you found, or7z archives?
While powerful, it is not "native" to Windows or macOS in the same way .zip is. You must download third-party software like 7-Zip or PeaZip to open or create these files. Community Perspective
It supports strong AES-256 encryption , allowing you to password-protect files with a high level of security.
The 7z format is widely considered one of the most efficient open-source compression methods available.
Below is a review of the 7z format and the software used to handle files like "g.7z."