If you have to compress a file using a compression tool and send it to someone, the PC on the other end also requires a utility like ?zip. Asking the person to download, install and learn how to use the tool might not always be practical. The SFX archive feature allows 7zip to create an executable archive where 'the user simply needs to double dick on the archive to uncompress it. To create an SFX archive, click the Create SFX archive checkbox in the Add to Archive window.