Page Speed

Google’s PageSpeed Insights - SEO

Exhibit 18.18   Google’s PageSpeed Insights.

A site’s page speed performance is measured in terms of the time to download and display the site on the user’s browser. The performance benchmark is 2 seconds, however for mobile devices web designers should aim for 1 second or less.

Google’s PageSpeed Insights is one of a number of tools one may use to measure a site’s performance. As can be seen from Exhibit 18.18 it provides a rating from 0 to 100, where scores of 90 and above are considered fast.

Because page speed has important bearing on user experience, search algorithms penalize slower sites.

The common approaches of improving site performance:

  • Compress images. Big image files often consume the maximum time to upload. Compressing them can greatly improve performance. It helps if images are properly sized and uploaded in next gen formats.
  • Animated GIFs should be replaced with video.
  • Avoid redirects.
  • Preload Scripts and Styles, and consider deferring all non-critical JS/CSS, delivering only critical elements inline.
  • Minify code (html, css, js). Minification is the process of minimizing code by removing redundant data, comments and unused code, and using shorter variable and function names.
  • Eliminate render-blocking resources.
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