Billed as a simpler way to image your microSD card with Raspbian, the Raspberry Pi Imager is the Pi Foundation's new imaging utility. The Raspberry Pi Imager is available to download now for free on macOS, Windows and Ubuntu.
https://www.notebookcheck.net/Raspberry-Pi-New-first-party-software-makes-it-easier-to-image-microSD-cards-and-install-OSes-on-macOS-Windows-and-Ubuntu.456004.0.html