The new GWT version 2.0 includes many of the new tools and from all of these the most important one is the iSpeed Tracer which is an extension of the Google Chrome and enables the developers to profile the performance of the web applications and also identify the sources of the slow service. Google and some of the other ones have been working on the browsers such as Firefox has greatly succeeded in making the JavaScript to work very faster. Now is the condition, as said by the product manager of Google Andrew Bowers that the codes of HTML as well as of CSS usually lead to the bottlenecks for the performance. He also said that the Speed Tracer enables you for profiling the application during the time and also helps you to see whatever is going on. The goal of the project is in making a tool and it does not only have the profiling facility. It is used for understanding instead.