{{ if and .Site.Params.piwikTrackerUrl .Site.Params.piwikSiteID -}}
<script>
  var _paq = window._paq || [];
  _paq.push(['trackPageView']);
  _paq.push(['enableLinkTracking']);
  (function() {
    var u="https://{{ .Site.Params.piwikTrackerUrl }}/";
    _paq.push(['setTrackerUrl', u+'matomo.php']);
    _paq.push(['setSiteId', '{{ .Site.Params.piwikSiteID }}']);
    var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
    g.async=true; g.defer=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
  })();
</script>
{{ end -}}