Zendesk embedded PDF viewer via Google Docs

pdf_magic.js

// add this javascript to your Zendesk Help Center pages
(function($) {
  $(function() {

    // for all attachment links whose URLs end with .pdf (case sensitive)...
    var pdfs = $('.attachments a[href$=".pdf"]');

    var eleBody = $('div.article-body');

    if (pdfs.length > 0) {
      var msg = '<b>' + pdfs.length + ' ';
      msg  += 'PDF file';
      if (pdfs.length > 1) { msg += 's'; }
      msg += ' attached</b> - download ';
      if (pdfs.length > 1) { msg += 'them'; } else { msg += 'it' }
      msg += ' from the bottom of the page.';
      eleBody.append('<p>' + msg + '</p>');
      pdfs.each(function(i,o) {
        // ...build html to an iframe on google docs viewer
        var html = '';
        html = '<iframe src="' + window.location.protocol + '//' + 'docs.google.com/viewer?url=';
        // url encode the full, absolute URL for the attachment
        html += encodeURIComponent(window.location.protocol + '//' + window.location.host + $(o).attr('href'));
        // set width and height
        html += '&embedded=true" width="100%" height="780" style="border: none;"></iframe>'

        // place into main body of the article
        eleBody.append(html);

      });
    }
  });
})(jQuery);