Use it for a clear job
7-Zip creates and extracts archives. It supports the 7z format and other common formats, with a distinction between formats it can create and those it can only unpack. Check the project’s own list if a particular format matters to you.
Choose the right build
The official project offers builds for different processor architectures. Match the installer to the computer rather than choosing solely by file size. For an ordinary task, begin with the graphical file manager or context-menu operation before exploring automation options.
Keep a readable copy
Test an archive by extracting a few files into a separate folder. If you use a password, keep a reliable record of it outside the archive. Compression helps package files; it does not create a backup on another device. Use the official site for current downloads and license details.