Issue link: https://read.uberflip.com/i/1146286
120 | Chapter 15: Deconstructing 10 Top Sites Google Google is known for its simple and fast page design. Its home page, http://www. google.com, is just 18K in total page size and issues just 3 HTTP requests (the HTML document and 2 images). However, even in this simple page there are several perfor- mance optimizations worth noting. The Google page is just three HTTP requests, but Figure 15-13 shows five HTTP requests. The two extra requests aren't really part of the page. One is http://www.google.com/ favicon.ico (see Figure 15-14). Favicons are used to associate a visual image with a URL. They are displayed next to the URL at the top of the browser, next to each URL in the list of Bookmarks or Favorites, and in tabs (for tab-enabled browsers). Browsers fetch them the first time a web site is loaded. If a web site doesn't have a favicon, a default icon is used. Figure 15-12. http://www.google.com Figure 15-13. Google HTTP requests YSlow grade Page weight HTTP requests Response time A 18K 3 1.7 sec html image image image image