It is well understood that page loading speed in a web browser is limited by the available connection bandwidth. However, it turns out bandwidth is not the only limiting factor and in many cases it is not even the most important one. The graph above shows the time it took to fully load the Wall Street Journal front page (chosen for its complexity which well represents many modern web sites) with a
![Optimizing Page Loading in the Web Browser](https://cdn-ak-scissors.b.st-hatena.com/image/square/d1ebf18b57d5684e8e3602d1ae28fa37bb0b3fa1/height=288;version=1;width=512/http%3A%2F%2Fwebkit.org%2Fblog-files%2Fwsj-nopreload.png)