Webmaster Central Blog
Official news on crawling and indexing sites for the Google index
Making smartphone sites load fast
ketvirtadienis, rugpjūčio 08, 2013
Webmaster level: Intermediate
Users
tell us
they use smartphones to search online because it’s quick and convenient, but today’s average mobile page typically
takes more than 7 seconds to load
. Wouldn’t it be great if mobile pages loaded in under one second? Today we’re announcing new
guidelines
and an updated
PageSpeed Insights tool
to help webmasters optimize their mobile pages for best rendering performance.
Prioritizing above-the-fold content
Research
shows
that users’ flow is interrupted if pages take longer than one second to load. To deliver the best experience and keep the visitor engaged, our guidelines focus on rendering some content, known as the above-the-fold content, to users in one second (or less!) while the rest of the page continues to load and render in the background. The above-the-fold HTML, CSS, and JS is known as the
critical rendering path
.
We can achieve sub-second rendering of the above-the-fold content on mobile networks by applying the following best practices:
Server must render the response (< 200 ms)
Number of redirects should be minimized
Number of roundtrips to first render should be minimized
Avoid external blocking JavaScript and CSS in above-the-fold content
Reserve time for browser layout and rendering (200 ms)
Optimize JavaScript execution and rendering time
These are explained in more details in the
mobile-specific help pages
, and, when you’re ready, you can test your pages and the improvements you make using the
PageSpeed Insights
tool.
As always, if you have any questions or feedback, please post in our
discussion group
.
Posted by
Bryan McQuade
, Software Engineer, and Pierre Far, Webmaster Trends Analyst
Hey!
Check here if your site is mobile-friendly.
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