It can handle astronomical amounts of data—up to 16 billion gigabytes (exbibytes) theoretically.

You can split one giant archive into smaller chunks (like archive.7z.001 , archive.7z.002 ), which is perfect for emailing large folders that exceed attachment limits. How to Open and Create .7z Files

Unlike .zip files, which most operating systems can open natively, .7z files usually require a third-party tool.

Most file manager apps on Android and iOS now support .7z extraction, or you can use the mobile version of iZip . Power User Tip: One File, One Archive

It supports AES-256 encryption , making it a top choice for protecting sensitive data with a password.

If you are comfortable with the command line, you can automate the creation of individual archives for multiple files. Instead of putting everything into one master.7z , you can run a script to turn document1.pdf into document1.7z and document2.pdf into document2.7z automatically. Is it Safe?

On average, .7z can shrink files 30–70% more than the ZIP format.