The tool gives you a nice graphical display of the various elements on your page. On the left hand side is a timeline which shows the load time of each object. On the right is the size of a particular element. Results can be sorted by a variety of factors, including load order and load time.
If you scroll down to the bottom, you will also get a summary of the results, including your total page loading time, number of objects and more.
It’s becoming more and more important to optimize your page loading times if you can. Google has already said that page load times is one of the many ranking factors they look at when determining the search engine rankings of your site. Plus, the faster your site loads, the better the user experience for your users.
The Pingdom Full Page Test Tool is free to use, so make sure to give it a try: tools.pingdom.com