franca-theme-blog/templates/components/image.j2

{% if post.image %}
<p>
    {% if home or section %}
    <a href="/{{ language }}{{ url }}" rel="permalink" title="{{ image_title }}">
        <img loading="lazy" src="{{ post.thumbnail }}" alt="{{ image_title }}" class="home-image" />
    </a>
    {% else %}
    <img loading="lazy" src="{{ post.image }}" alt="{{ image_title }}" class="post-image" />
    {% endif %}
</p>
{% endif %}