jekyll-seo-tag/lib/template.html

<!-- Begin Jekyll SEO tag -->

{% if site.url %}
  {% assign seo_url = site.url %}
{% elsif site.github.url %}
  {% assign seo_url = site.github.url %}
{% endif %}

{% if page.title %}
  {% assign seo_title = page.title %}
  {% if site.title %}
    {% assign seo_title = seo_title | append:" - " | append: site.title %}
  {% endif %}
{% elsif site.title %}
  {% assign seo_title = site.title %}
{% endif %}
{% if seo_title %}
  {% assign seo_title = seo_title | escape | markdownify | strip_html | strip_newlines  %}
{% endif %}

{% if page.description %}
  {% assign seo_description = page.description %}
{% elsif site.description %}
  {% assign seo_description = site.description %}
{% endif %}
{% if seo_description %}
  {% assign seo_description = seo_description | escape | markdownify | strip_html | strip_newlines %}
{% endif %}

{% if seo_title %}
  <title>{{ seo_title }}</title>
  <meta property="og:title" content="{{ seo_title }}" />
{% endif %}

{% if seo_description %}
  <meta name="description" content="{{ seo_description }}" />
  <meta property='og:description' content="{{ seo_description }}" />
{% endif %}

{% if seo_url %}
  <link rel="canonical" href="{{ seo_url }}{{ page.url }}" itemprop="url" />
  <meta property='og:url' content='{{ seo_url }}{{ page.url }}' />
{% endif %}

{% if site.title %}
  <meta property="og:site_name" content="{{ site.title }}" />
  <script type="application/ld+json">
    {
      "@context" : "http://schema.org",
      "@type" : "WebSite",
      "name" : {{ site.title | jsonify }},
      "url" : {{ seo_url | jsonify }}
    }
  </script>
{% endif %}

{% if page.image %}
  <meta property="og:image" content="{{ page.image }}" />
{% endif %}

{% if page.date %}
  <meta property="og:type" content="article" />
  {% if page.next.url %}
    <link rel="next" href="{{ seo_url }}{{ page.next.url }}" title="{{ page.next.title | escape }}" />
  {% endif %}
  {% if page.previous.url %}
    <link rel="prev" href="{{ seo_url }}{{ page.previous.url }}" title="{{ page.previous.title | escape }}" />
  {% endif %}
  <script type="application/ld+json">
    {
      "@context": "http://schema.org",
      "@type": "NewsArticle",
      "headline": {{ page.title | jsonify }},
      "image": {{ page.image | jsonify }},
      "datePublished": {{ page.date | date_to_xmlschema | jsonify }},
      "description": {{ page.description | jsonify }}
    }
  </script>
{% endif %}

{% if site.twitter %}
  <meta name="twitter:card" content="summary" />
  <meta name="twitter:site" content="@{{ site.twitter.username | replace:"@","" }}" />
  <meta name="twitter:title" content="{{ seo_title }}" />
  <meta name="twitter:description" content="{{ seo_description }}" />
  {% if page.image %}
    <meta name="twitter:image" content="{{ page.image | escape }}" />
  {% endif %}
  {% if page.author %}
    <meta name="twitter:creator" content="@{{ page.author | replace:"@","" }}" />
  {% endif %}
{% endif %}

{% if site.logo %}
  <script type="application/ld+json">
    {
      "@context": "http://schema.org",
      "@type": "Organization",
      "url": {{ seo_url | jsonify }},
      "logo": {{ site.logo | prepend: "/" | prepend: seo_url | jsonify }}
    }
  </script>
{% endif %}

{% if site.social %}
  <script type="application/ld+json">
    {
      "@context" : "http://schema.org",
      "@type" : "{% if site.social.type %}{{ site.social.type }}{% else %}person{% endif %}",
      "name" : "{% if site.social.name %}{{ site.social.name }}{% else %}{{ site.title }}{% endif %}",
      "url" : {{ seo_url | jsonify }},
      "sameAs" : {{ site.social.links | jsonify }}
    }
  </script>
{% endif %}

<!-- End Jekyll SEO tag -->