{% load thumbnail %}

{% thumbnail instance.image 50x50 crop upscale quality=50 as thumb %}
{% thumbnail instance.image 150x150 crop upscale quality=50 as thumb_quote %}


<section class="image-block{% if instance.caption %} image-block--quote{% endif %}">
    <div class="wrapper wrapper--mid">
        <div class="image-block__image">
            <img src="{% if instance.caption %}{{ thumb_quote.url }}{% else %}{{ thumb.url }}{% endif %}" alt="{% if instance.alt_text %}{{ instance.alt_text }}{% else %}Content image{% endif %}" />
            {% if instance.caption %}
                <div class="quote">
                    <p>{{ instance.caption }}</p>
                </div>
            {% endif %}
        </div>
    </div>
</section>