The host AdBlocker extension blocks ads, tracker, and analytic sources based on host filtering. You can easily block ads, trackers, and analytic sources by adding their hostnames to the whitelist in the settings. The whitelist contains default hostnames, which include advertisement and analytics, and custom domain names, which you can add to the options page. You can check the whitelist in the settings to make sure that all your sources are blocked.

You can add your own domain names to the whitelist to allow specific domains to pass through the filter. The whitelist also contains a default rule to allow traffic to pass through. You can add your custom domain names to the default rule. This means that any requests to your hostnames will be allowed.