Performance is critical to the success of a website, but today's web applications push the browser to restrict them with the increasing amount of rich content and heavy use of Ajax. In this book, Steve Souders, performance web evangelist at Google and former Chief Performance Yahoo, provides a valuable technique to help you optimize your site performance. previous book Souders' High Performance Web Sites selling, web development shocked the world by revealing that 80% of the time it takes for a web page to load on the client side. In fact, Fast Web Site, Souders and eight expert contributors provide best practices and pragmatic advice to improve your site's performance in three critical categories: JavaScript - Get tips for understanding the performance of Ajax, JavaScript write efficient, make the application responsive, loading scripts without blocking other components, and more.