{% if page.tikzjax %}
  <script
    defer
    src="https://tikzjax.com/v1/tikzjax.js"
    integrity="sha256-+1qyucCXRZJrCg3lm3KxRt/7WXaYhBid4/1XJRHGB1E="
    crossorigin="anonymous"
  ></script>
{% endif %}