duckquill/templates/includes/footer.html

<footer class="footer">
  {% if config.extra.footer.show_copyright %}
    <p title="Last built at {{ now() | date(format='%F %R %Z') }}">&copy; {{ config.title }}, 2023</p>
  {% endif %}

  {% if config.extra.footer.show_source %}
    <p><a href="{{ config.extra.source_url }}">Website source</a></p>
  {% endif %}

  {% if config.extra.footer.show_powered_by %}
    <p><small>Powered by <a href="https://www.getzola.org">Zola</a> and <a href="https://duckquill.exozy.me">Duckquill</a></small></p>
  {% endif %}

  {% if config.extra.footer.show_johnvert %}
    <small>
      <details><summary>Johnvertisement</summary>
        <iframe class="johnvertisement" title="Johnvertisement" src="https://john.citrons.xyz/embed?ref={{ config.extra.footer.johnvert_ref }}"></iframe>
      </details>
    </small>
  {% endif %}
</footer>