How can you define rules for font fallbacks that are specific to each font?

There are times when web fonts fail to load, especially if hosted on platforms like Google Fonts. In such cases, fallback fonts may require special attention as they can vary significantly from the originally specified fonts.

For example:

font-family:'webfontname', 'winfont', 'linuxfont', sans-serif;

In this scenario, the web font should have a letter-spacing of 2px, while the winfont should have a letter-spacing of -4px.

How can I effectively handle this situation?

Thank you.

Answer №1

If you're utilizing Google Web Fonts, I recommend implementing the WebFont Loader. This will enable you to customize CSS based on whether the font is loading or already loaded.

Take a look at this basic example inspired by the code in the second link:

http://jsbin.com/izadif/ (spam refresh to see it)

<!DOCTYPE html>
<html>
  <head>
    <script type="text/javascript">
      WebFontConfig = {
        google: { families: [ 'Cantarell' ] }
      };
      (function() {
        var wf = document.createElement('script');
        wf.src = ('https:' == document.location.protocol ? 'https' : 'http') +
            '://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js';
        wf.type = 'text/javascript';
        wf.async = 'true';
        var s = document.getElementsByTagName('script')[0];
        s.parentNode.insertBefore(wf, s);
      })();
    </script>
    <style type="text/css">
      .wf-loading h1 {
        font-family: serif;
        font-size: 16px;
        color: red;
        letter-spacing: 20px;
      }
      .wf-active h1 {
        font-family: 'Cantarell', serif;
        font-size: 16px;
        letter-spacing: 2px;
      }
    </style>
  </head>
  <body>
    <h1>This text is styled with Cantarell font</h1>
  </body>
</html>

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