Prioritize Critical CSSConfiguration The 'Prioritize Critical CSS' filter is enabled by specifying: Apache:ModPagespeedEnableFilters prioritize_critical_css Nginx:pagespeed EnableFilters prioritize_critical_css; in the configuration file. Objective This rewriter improves page render times by identifying CSS rules needed to render the page, inlining those critical rules and deferring the load of the full CSS resources. D
