Not sure if it's posted by MrSandvik or not but this is a good one
Code: 
http://gtmetrix.com/
PuKaX Reviewed by PuKaX on . Test Website Speed Site Whats a good site to test the speed of your website? I think MrSandvik posted a good one before where it told you how to optmise your site, but i cant find it. Rating: 5