DNS over HTTPS (DoH) helps protect your privacy and security online by encrypting DNS queries. Mozilla will automatically enable DoH for some Firefox users, but only if they live in the U.S.—and it may take a few weeks to roll out. Here’s how all Firefox users can enable it today.
To enable DoH, click the three horizontal bars in the top-right corner of Firefox and then select the “Options” button. (Click “Preferences” if you’re on macOS.)