blog.grink.tech/custom-theme/templates/include/jsonld_article.html

{% if SITELOGO %}
    {% set default_cover = SITEURL + '/' + SITELOGO %}
{% else %}
    {% set default_cover = SITEURL + '/' + 'favicon.ico' %}
{% 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>