In the toolbar, a pop-up window will appear with the website that you selected.
The Page to Pop-up extension may show the website you desire in the browser's toolbar pop-up (in mobile view) after installation. Go to the options page and input your target website (including the complete URL). There are five different mobile views for toolbar pop-ups: iOS, Android, Windows Phone, Tizen, and Firefox OS. You can also modify the size of the pop-up and block advertising within it (see options page).