flex/templates/partial/jsonld_article.html

{% if SITELOGO %}
  {% set default_cover = SITELOGO %}
{% else %}
  {% set default_cover = '{{ SITEURL }}/{{ THEME_STATIC_DIR }}/img/profile.png' %}
{% endif %}
<script type="application/ld+json">
{
  "@context": "http://schema.org",
  "@type": "BlogPosting",
  "name": "{{ article.title|striptags }}",
  "headline": "{{ article.title|striptags }}",
  "datePublished": "{{ article.date }}",
  "dateModified": "{{ article.modified }}",
  "author": {
    "@type": "Person",
    "name": "{{ article.author.name }}",
    "url": "{{ SITEURL }}/{{ article.author.url }}"
  },
  "image": "{{ article.metadata.get('cover', default_cover) }}",
  "url": "{{ SITEURL }}/{{ article.url }}",
  "description": "{{ article.summary|striptags }}"
}
</script>