How to set DoH on Vivaldi

Upgrade your Vivaldi to latest version

Make sure you have installed latest Vivaldi, or you can download here (opens in a new tab).

Go to Settings

Input vivaldi:settings/network/ in address bar or use ctrl + F12 to open settings page.

Set DNS.SB DoH Server

On Network section, or you can search DNS Over HTTPS, then enable DNS Over HTTPS, choose Custom DNS Provider and input:

https://doh.dns.sb/dns-query