{% if src %}
  {# If the image's URL is internal to the site... #}
  {% if src is not starting_with("http") %}
    {# ... then convert the page's colocated_path ident to a string so it can be concatenated. #}
    {% set page_path = page.colocated_path | as_str %}
    {# ... and prepend the site's base URL to the image's URL. #}
    {% set src = config.base_url ~ page_path ~ src %}
  {% endif %}
  <img src="{{ src | safe }}"{% if alt %} alt="{{ alt }}"{% endif %} class="{% if position %}{{ position }}{% else -%} center {%- endif %}" {%- if style %} style="{{ style | safe }}" {%- endif %} />
{% endif %}