Google Duo is finally available on Chrome, Safari, and Firefox. Simply head over to the Duo site, and you can place calls from your browser.
There’s no setup required. Just make sure you’re logged in and have a Duo account. The page includes all your synced Duo contacts, so you can click on someone in the list or search to begin a call. The web version supports both voice and video calls, and you get a preview window to make sure you look presentable before beginning.
You can start using Duo on your web by clicking on the link below.