Advanced users can now analyze logged-in pages (like Facebook profiles) by specifying cookies.
This will simulate a logged in session and generate a GTmetrix report for that page. Read more in the FAQ
GTmetrix can now analyze IPv6 enabled websites:
https://gtmetrix.com/reports/ipv6.gossamer-threads.com/475PwjAb
Let’s make the future of the web faster, too. Test your IPv6 enabled site today!