r').each(function(i, el) {
      var orcid_id = front_matter.authors[i].orcidID;
      var author_name = front_matter.authors[i].author
      if (orcid_id) {
        var a = $('<a></a>');
        a.attr('href', 'https://orcid.org/' + orcid_id);
        var img = $('<img></img>');
        img.addClass('orcid-id');
        img.attr('alt', author_name ? 'ORCID ID for ' + author_name : 'ORCID ID');
        img.attr('src','data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAGXRFWHRTb2Z0d2FyZQBB