Tag Archives: lighthouse

Google PageSpeed Insights; the great Defer unused CSS mystery to be resolved?

You know that frustrating Google PageSpeed Insights opportunity “Defer unused CSS”? Well, it’s going to be renamed soon (in Lighthouse first, so GPSI should follow) as per this Github merged pull request;

The full text will read;

Remove unused CSS
Remove dead rules from stylesheets and defer the loading of CSS not used for above-the-fold content to reduce unnecessary bytes consumed by network activity.