Test your site’s render speed with Chrome’s simulated network-connection throttling.
If you’ve tried to use Fiddler to debug your ajax script locally, you’ve probably noticed that it doesn’t log the traffic to http://localhost/. Well, it can! And it’s a really easy hack. Just put a dot at the end of localhost in your browser. Like this: http://localhost.:321/ AMAZING!!! (and here’s why it works)