knp_snappy_5.html.twig

# footer.html
{% extends 'base_pdf.html.twig' %}
{% block body %}
<div class="footer">
  <div class="footer__pager">
    <span class="page"></span>/<span class="topage"></span>
  </div>
</div>
<script>
  function subst() {
    var vars={};
    var x= document.location.search.substring(1).split('&');
    for(var i in x) {
      var z=x[i].split('=',2);
      vars[z[0]] = unescape(z[1]);
     }
    var x=['frompage','topage','page','webpage','section','subsection','subsubsection'];
    for(var i in x) {
      var y = document.getElementsByClassName(x[i]);
      for(var j=0; j<y.length; ++j) {
        y[j].textContent = vars[x[i]];
      }
    }
  }
  subst();
</script>
{% endblock %}