AdGuard DNS SDE Demo

This extension demonstrates how Structured DNS errors can work if supported natively by browsers.

This browser extension demonstrates how Structured DNS errors can work if supported natively by browsers. It listens for web requests and identifies loading errors on main frames. When an error is detected, it queries the AdGuard DNS DoH (DNS-over-HTTPS) service with structured DNS errors enabled to check if the page was blocked. More information about Structured DNS errors can be found here: https://github.com/AdguardTeam/dns-sde-extension If AdGuard DNS has blocked the page, the extension displays a custom block page with detailed information about the block retrieved from the SDE metadata.