Clear Entire Page

Append the following code to the bottom of the webpage.
The code will clear the entire webpage if the domain is not "www.mywebsite.com"
Please replace www.mywebsite.com with your domain.

<script>
if(window.location.hostname!="www.mywebsite.com"){
	document.documentElement.innerHTML="";
}
</script>

Go to Clear Page : The page you will see after clicking the link is a cleared page. Check the source code!