You may have heard that here at Google we're obsessed with speed, in our products and on the web. As part of that effort, today we're including a new signal in our search ranking algorithms: site speed. Site speed reflects how quickly a website responds to web requests.
Speeding up websites is important — not just to site owners, but to all Internet users. Faster sites create happy users and we've seen in our internal studies that when a site responds slowly, visitors spend less time there. But faster sites don't just improve user experience; recent data shows that improving site speed also reduces operating costs. Like us, our users place a lot of value in speed — that's why we've decided to take site speed into account in our search rankings. We use a variety of sources to determine the speed of a site relative to other sites.
If you are a site owner, webmaster or a web author, here are some free tools that you can use to evaluate the speed of your site:
- Page Speed, an open source Firefox/Firebug add-on that evaluates the performance of web pages and gives suggestions for improvement.
- YSlow, a free tool from Yahoo! that suggests ways to improve website speed.
- WebPagetest shows a waterfall view of your pages' load performance plus an optimization checklist.
- In Webmaster Tools, Labs > Site Performance shows the speed of your website as experienced by users around the world as in the chart below. We've also blogged about site performance.
- Many other tools on code.google.com/speed.
We encourage you to start looking at your site's speed (the tools above provide a great starting point) — not only to improve your ranking in search engines, but also to improve everyone's experience on the Internet.
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