The document discusses high performance web design. It covers measuring performance using tools like YSlow and PageSpeed, as well as techniques to improve performance such as reducing HTTP requests by combining scripts and stylesheets, using CSS sprites, and inline images. The document also discusses how performance impacts businesses and provides examples of component weights and grades for diffe
![High Performance Web Design](https://cdn-ak-scissors.b.st-hatena.com/image/square/6332ca9ec588c74181905eb15467d98a09421106/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Fwpo-091026191440-phpapp02-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)