Rufus is a small utility that helps format and create bootable USB flash drives, such as USB keys/pendrives, memory sticks, etc.It can be especially useful for cases where: you need to create USB installation media from bootable ISOs (Windows, Linux, UEFI, etc.) you need to work on a system that doesn't have an OS installed you need to flash a BIOS or other firmware from DOS you want to run a low-level utilityDespite its small size, Rufus provides everything you need!Once downloaded, the application is ready to use ? no installation or other files are necessary.