I am trying to pre-load font-awesome to improve my page load times:
You must add the crossorigin attribute when preloading fonts.
<link rel="preload" as="style" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css"/>
<link rel="preload" as="font" type="font/woff2" crossorigin href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/fonts/fontawesome-webfont.woff2?v=4.3.0"/>
Try using this method:
<style>
@font-face {
font-family: 'FontAwesome-swap';
font-display: swap;
src: local('FontAwesome'), url(https:////maxcdn.bootstrapcdn.com/font-awesome/4.3.0/fonts/fontawesome-webfont.woff2?v=4.3.0) format('woff2');
}
</style>
It can be loading it twice because of the order you are doing preload.
<link rel="preload" as="font" type="font/woff2" crossorigin href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/fonts/fontawesome-webfont.woff2?v=4.3.0"/>
<link rel="preload" as="style" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css" onload="this.rel='stylesheet'"/>
Preload the font first so that, css @font-face does not send a request again to load it.
Along with marking a link as a preload stylesheet with rel="preload"
(what you already did), we also need to use JavaScript to toggle the rel
attribute to stylesheet
when the file loads:
<link rel="preload" as="style" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css" onload="this.rel='stylesheet'"/>
<link rel="preload" as="font" type="font/woff2" crossorigin href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/fonts/fontawesome-webfont.woff2?v=4.3.0"/>