Google Webmaster Central Blog has come out with a list of measures which can be used to make smartphone sites load faster. Today’s avreage mobile page takes more than 7 seconds to load. Google has announced new guidelines to help webmasters optimize their mobile pages for best rendering performance & also updated Pagespeed Insights tool. These guidelines focus on rendering above the fold content to users in one second or less while the rest of the page continues to load. The above-the-fold HTML, CSS, and JS is known as the critical rendering path.
Following are some of the best practices & guidelines which can be applied.
1) Server must render the response (< 200 ms)
2) Number of redirects should be minimized
3) Number of roundtrips to first render should be minimized
5) Reserve time for browser layout and rendering (200 ms)
More about this can be had at Google’s mobile-specific help pages.