AdGuard Extra is a beta version browser extension developed by Adguard Software Ltd. It is specifically designed to tackle ad blocking circumvention attempts that are becoming increasingly popular. While regular ad blocking rules may not always be flexible enough to handle these attempts, AdGuard Extra offers a solution.

It is important to note that AdGuard Extra is meant to be used in conjunction with a full-scale ad blocker, such as AdGuard or any other similar program. The extension itself provides no user interface, except for an icon in the browser's toolbar. If the icon is bothersome, most browsers allow users to hide it.

AdGuard Extra is only useful on a limited set of websites and does not function on websites outside of this list. To know which websites are compatible with the extension, you can refer to the list provided by AdGuard on their GitHub page.

For any issues or bug reports, users can submit them on the GitHub repository dedicated to AdGuard Extra.