This is the last microdata-schema for our Shopify themes

microdata-schema.liquid

{%- comment -%}
This snippet structures the micro-data using JSON-LD specification. Please note that for Product especially,
the schema often changes. We try to output as much info as possible, but Google may add new requirements over time,
or change the format of some info
{%- endcomment -%}

{%- if request.page_type == 'product' -%}
  {%- assign days_product_price_valid_until = 10 | times: 86400 -%}

  {%- capture main_entity_microdata -%}
    "@type": "Product",
    "productID": {{ product.id | json }},
    "offers": [
      {%- for variant in product.variants -%}
        {%- assign gtin_option = 'gtin' -%}
        {%- if variant.barcode != blank -%}
          {%- assign is_barcode_available = true -%}
          {%- assign gtin_string_length = variant.barcode | size -%}

          {%- if gtin_string_length == 8 or gtin_string_length == 12 or gtin_string_length == 13 or gtin_string_length == 14 -%}
            {%- assign is_valid_gtin_length = true -%}
          {%- endif -%}
        {%- endif -%}

        {
          "@type": "Offer",
          "name": {% if product.has_only_default_variant %}{{ product.title | json }}{% else %}{{ variant.title | json }}{% endif %},
          "availability": {%- if variant.available -%}"https://schema.org/InStock"{%- else -%}"https://schema.org/OutOfStock"{%- endif -%},
          "price": {{ variant.price | divided_by: 100.0 | json }},
          "priceCurrency": {{ cart.currency.iso_code | json }},
          "priceValidUntil": "{{ 'now' | date: '%s' | plus: days_product_price_valid_until | date: '%Y-%m-%d' }}",
          {%- if variant.sku != blank -%}
            "sku": {{ variant.sku | json }},
          {%- endif -%}
          {%- if is_barcode_available and is_valid_gtin_length %}
            "gtin": {{ product.selected_or_first_available_variant.barcode | json }},
          {%- elsif is_barcode_available %}
            "mpn": {{ product.selected_or_first_available_variant.barcode | json }},
          {%- endif %}
          "url": "{{ product.url }}?variant={{ variant.id }}"
        }{% unless forloop.last %},{% endunless %}
      {%- endfor -%}
    ],
    {%- if product.metafields.reviews.rating.value != blank and product.metafields.reviews.rating_count.value > 0 -%}
      "aggregateRating": {
        "@type": "AggregateRating",
        "ratingValue": "{{ product.metafields.reviews.rating.value }}",
        "reviewCount": "{{ product.metafields.reviews.rating_count.value }}",
        "worstRating": "{{ product.metafields.reviews.rating.value.scale_min }}",
        "bestRating": "{{ product.metafields.reviews.rating.value.scale_max }}"
      },
    {%- endif -%}
    "brand": {
      "@type": "Brand",
      "name": {{ product.vendor | json }}
    },
    "name": {{ product.title | json }},
    "description": {{ product.description | strip_html | json }},
    "category": {{ product.type | json }},
    "url": "{{ product.url }}",
    "sku": {{ product.selected_or_first_available_variant.sku | json }},
    "image": {
      "@type": "ImageObject",
      "url": "https:{{ page_image | image_url: width: 1024 }}",
      "image": "https:{{ page_image | image_url: width: 1024 }}",
      "name": {{ page_image.alt | json }},
      "width": "1024",
      "height": "1024"
    }
  {%- endcapture -%}
{%- elsif request.page_type == 'article' -%}
  {%- capture main_entity_microdata -%}
    "@type": "BlogPosting",
    "mainEntityOfPage": "{{ article.url }}",
    "articleSection": {{ blog.title | json }},
    "keywords": "{{ article.tags | join: ', ' }}",
    "headline": {{ article.title | json }},
    "description": {{ article.excerpt_or_content | strip_html | truncatewords: 25 | json }},
    "dateCreated": "{{ article.created_at | date: '%Y-%m-%dT%T' }}",
    "datePublished": "{{ article.published_at | date: '%Y-%m-%dT%T' }}",
    "dateModified": "{{ article.published_at | date: '%Y-%m-%dT%T' }}",
    "image": {
      "@type": "ImageObject",
      "url": "https:{{ page_image | image_url: width: 1024 }}",
      "image": "https:{{ page_image | image_url: width: 1024 }}",
      "name": {{ page_image.alt | json }},
      "width": "1024",
      "height": "1024"
    },
    "author": {
      "@type": "Person",
      "name": "{{ article.user.first_name | escape }} {{ article.user.last_name | escape }}",
      "givenName": {{ article.user.first_name | json }},
      "familyName": {{ article.user.last_name | json }}
    },
    "publisher": {
      "@type": "Organization",
      "name": {{ shop.name | json }}
    },
    "commentCount": {{ article.comments_count }},
    "comment": [
      {%- for comment in article.comments limit: 5 -%}
        {
          "@type": "Comment",
          "author": {{ comment.author | json }},
          "datePublished": "{{ comment.created_at | date: '%Y-%m-%dT%T' }}",
          "text": {{ comment.content | json }}
        }{%- unless forloop.last -%},{%- endunless -%}
      {%- endfor -%}
    ]
  {%- endcapture -%}
{%- endif -%}

{%- capture breadcrumb_entity_microdata -%}
  "@type": "BreadcrumbList",
  "itemListElement": [{
      "@type": "ListItem",
      "position": 1,
      "name": {{ 'general.home' | t | json }},
      "item": "{{ shop.url }}"
    }

    {%- if request.page_type == 'product' -%}
      {%- if collection -%}
        ,{
          "@type": "ListItem",
          "position": 2,
          "name": {{ collection.title | json }},
          "item": "{{ shop.url }}{{ collection.url }}"
        }, {
          "@type": "ListItem",
          "position": 3,
          "name": {{ product.title | json }},
          "item": "{{ shop.url }}{{ product.url }}"
        }
      {%- else -%}
        ,{
          "@type": "ListItem",
          "position": 2,
          "name": {{ product.title | json }},
          "item": "{{ shop.url }}{{ product.url }}"
        }
      {%- endif -%}
    {%- elsif request.page_type == 'collection' -%}
        ,{
          "@type": "ListItem",
          "position": 2,
          "name": {{ collection.title | json }},
          "item": "{{ shop.url }}{{ collection.url }}"
        }
    {%- elsif request.page_type == 'blog' -%}
        ,{
          "@type": "ListItem",
          "position": 2,
          "name": {{ blog.title | json }},
          "item": "{{ shop.url }}{{ blog.url }}"
        }
    {%- elsif request.page_type == 'article' -%}
        ,{
          "@type": "ListItem",
          "position": 2,
          "name": {{ blog.title | json }},
          "item": "{{ shop.url }}{{ blog.url }}"
        }, {
          "@type": "ListItem",
          "position": 3,
          "name": {{ blog.title | json }},
          "item": "{{ shop.url }}{{ article.url }}"
        }
    {%- elsif request.page_type == 'page' -%}
       ,{
          "@type": "ListItem",
          "position": 2,
          "name": {{ page.title | json }},
          "item": "{{ shop.url }}{{ page.url }}"
        }
    {%- endif -%}
  ]
{%- endcapture -%}

{% if main_entity_microdata != blank %}
  <script type="application/ld+json">
  {
    "@context": "https://schema.org",
    {{ main_entity_microdata }}
  }
  </script>
{% endif %}

{% if breadcrumb_entity_microdata != blank %}
  <script type="application/ld+json">
  {
    "@context": "https://schema.org",
    {{ breadcrumb_entity_microdata }}
  }
  </script>
{% endif %}

{%- if request.page_type == 'index' -%}
  {%- assign potential_action_target = request.origin | append: routes.search_url | append: "?q={search_term_string}" -%}

  <script type="application/ld+json">
    {
      "@context": "https://schema.org",
      "@type": "WebSite",
      "name": {{ shop.name | json }},
      "url": {{ shop.url | append: page.url | json }},
      "potentialAction": {
        "@type": "SearchAction",
        "target": {{ potential_action_target | json }},
        "query-input": "required name=search_term_string"
      }
    }
  </script>
{%- endif -%}