brainbaking/layouts/partials/google_analytics_anonymous.html

{{ if .Site.GoogleAnalytics }}
<!-- hugo doesn't provide extra settings like anonymizeIp ... -->
<script>
  window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date;
  ga('create', '{{ .Site.GoogleAnalytics}}', 'auto');
  ga('set', 'anonymizeIp', true);
  ga('send', 'pageview');
</script>
<script async src='//www.google-analytics.com/analytics.js'></script>
{{ end }}