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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <h1>Smarter web font loading and caching</h1>
<p>Based on The Guardian website. Web fonts are loaded, cached and applied using the following logic:</p>
  <li>Pre-render: if the fonts are in localstorage apply immediately, else do nothing!</li>
  <li>Post-render: if the fonts are not yet in localstorage (but localstorage is available) and the browser supports WOFF (not yet implemented, how do I detect this?) download base64 encoded fonts in JSON format, store and apply them.</li>
<p>The advantage of this approach is that you can have a custom web font without performance hit or invisible text while the browser is downloading the font (this behavior differs per browser).</p>
<p>Wrote an article about this, read it on <a href="http://crocodillon.com/blog/non-blocking-web-fonts-using-localstorage" target="_blank">my blog</a>!
              html {
  margin: 0.75em;
  color: #444;
  font: 300 100%/1.5 Ubuntu, sans-serif;

h1 {
  font: 400 2.5em/1 Alegreya, serif;

a {
  color: #444;
 * Should be in the head to prevent FOUT on subsequent page views.
 * http://crocodillon.com/blog/non-blocking-web-fonts-using-localstorage
 * Make sure to edit md5 and path to your fonts json!
(function(window, document) {
  'use strict';

  var isModernBrowser = (
        'querySelector' in document &&
        'localStorage' in window &&
        'addEventListener' in window
      md5 = 'e90ba95faca6e63b5516ed839f4514ec',
      key = 'fonts',

  if (!isModernBrowser) {
    // Sorry, browser is too old!

  function insertFont(value) {
    var style = document.createElement('style');
    style.innerHTML = value;

  try {
    cache = window.localStorage.getItem(key);
    if (cache) {
      cache = JSON.parse(cache);
      if (cache.md5 == md5) {
      } else {
        // Busting cache when md5 doesn't match
        cache = null;
  } catch(e) {
    // Most likely LocalStorage disabled, so hopeless...
  if (!cache) {
    window.addEventListener('load', function() {
      var request = new XMLHttpRequest(),
      request.open('GET', 'http://crocodillon.com/temp/webfont.json', true);
      request.onload = function() {
        if (this.status == 200) {
          try {
            response = JSON.parse(this.response);
            window.localStorage.setItem(key, this.response);
          } catch(e) {
            // LocalStorage is probably full
})(window, document);

 * Inspired by: https://github.com/guardian/frontend/blob/dea76ec06878986a417b9fc0f87e11965f504d27/common/app/assets/javascripts/modules/ui/fonts.js
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