Page Speed Online is powered by the same Page Speed SDK that powers the Chrome and Firefox extensions and webpagetest.org.

Please give Page Speed Online a try. We’re eager to hear your feedback on our mailing list and how you’re using it to optimize your site.


While you may still want to detect “android” in the User-Agent to implement Android-specific features, such as touch-screen optimizations, our main message is: Should your mobile site depends on UA sniffing, please detect the strings “mobile” and “android,” rather than just “android,” in the User-Agent. This helps properly serve both your mobile and tablet visitors.

For questions, please join our Android community in their developer forum.


The next time Brian’s friend Mary is signed in and searching on Google and your page appears, she might see a personalized annotation letting her know that Brian +1’d it. So Brian’s +1 helps Mary decide that your site is worth checking out.


We expect that these personalized annotations will help sites stand out by showing users which search results are personally relevant to them. As a result, +1’s could increase both the quality and quantity of traffic to the sites people care about.

But the +1 button isn’t just for search results. We’re working on a +1 button that you can put on your pages too, making it easy for people to recommend your content on Google search without leaving your site. If you want to be notified when the +1 button is available for your website, you can sign up for email updates at our +1 webmaster site.

Over the coming weeks, we’ll add +1 buttons to search results and ads on Google.com. We’ll also start to look at +1’s as one of the many signals we use to determine a page’s relevance and ranking, including social signals from other services. For +1's, as with any new ranking signal, we'll be starting carefully and learning how those signals affect search quality over time. At first the +1 button will appear for English searches only on Google.com, but we’re working to add more languages in the future.

We’re excited about using +1’s to make search more personal, relevant and compelling. We hope you’re excited too! If you have questions about the +1 button and how it affects search on Google.com, you can check the Google Webmaster Central Help Center.

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