add_filter('style_loader_tag', 'flatsomeIconsPreloader', 10, 2);
function flatsomeIconsPreloader($html, $handle) {
if( 0 != strpos( $html, 'flatsome-icons' ) ) {
$html = str_replace( "rel='stylesheet'", "rel='preload' as='style' ", $html );
$html .= "";
}
return $html;
}
Author: Wojciech Borowicz
I hope this post will help you to do what you need.
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