wagtail_bakerydemo/bakerydemo/templates/base/about_page.html

{% extends "base.html" %}
{% load wagtailimages_tags %}

{% block content-header %}
    {{ page.title }}

    <div class="image">
        {% image page.image width-500 as photo %}
              <img src="{{ photo.url }}" width="{{ photo.width }}" height="{{ photo.height }}" alt="{{ photo.alt }}" />
    </div>
{% endblock content-header %}

{% block content-body %}
    {{ page.body }}
{% endblock content-body %}