Ladda CSS asynkront i WP

This HTML tricks let the browser to preload the CSS assets, and when it’s done load it as stylesheet so they take a lot of priority in the page.

add_filter('style_loader_tag', 'preload_gfont', 10, 2);

function preload_gfont($html, $handle) {

if ( $handle === 'google-fonts' || strpos( $handle, 'fontawesome' ) !== false ) {

return str_replace("rel='stylesheet'", "rel='preload' as='style' onload=\"this.rel='stylesheet'\"", $html);

}

return $html;

}