OG and Rich Snippets.

README.md

@@ -30,6 +30,7 @@ See what you can customize.
 | SITESUBTITLE | Short description to show below subtitle. |
 | SITELOGO | Profile picture to show above author name (absolute url). |
 | SITEDESCRIPTION | Site description to use in meta tags. |
+| OG_LOCALE | language_TERRITORY for Open Graph. Default is `en_US`. |
 | COPYRIGHT_YEAR | Copyright year to display on footer. |
 | CC_LICENSE | Creative Commons License to show on footer. |
 | MENUITEMS | A list of tuples (Title, URL) for additional menu items to appear on main menu. |
@@ -101,6 +102,7 @@ If you need more icons, you will need to add a custom background to keep all ico
 |:----:|------------------|
 | Summarise | Enable Home summary. |
 | Cover | Cover image for social sharing (absolute url). |
+| OgLocale | Open graph locale. |
 
 By default, all article content is shown on Home.
 If the article has a custom Summary, the custom summary is shown.

templates/partial/cc_license.html

@@ -0,0 +1,17 @@
+<p>
+  &copy; {{ AUTHOR }} {{ COPYRIGHT_YEAR }} - This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/{{ CC_LICENSE['slug'] }}/{{ CC_LICENSE['version'] }}/">{{ CC_LICENSE['name'] }} {{ CC_LICENSE['version'] }} International License</a>
+</p>
+{% include "partial/flex.html" %}
+<p>
+  <a rel="license"
+     href="http://creativecommons.org/licenses/{{ CC_LICENSE['slug'] }}/{{ CC_LICENSE['version'] }}/"
+     target="_blank">
+    <img alt="Creative Commons License"
+         title="Creative Commons License"
+         style="border-width:0"
+         src="https://i.creativecommons.org/l/{{ CC_LICENSE['slug'] }}/{{ CC_LICENSE['version'] }}/80x15.png"
+         width="80"
+         height="15"/>
+  </a>
+  {% include "partial/statuscake.html" %}
+</p>

templates/partial/jsonld.html

@@ -0,0 +1,10 @@
+<script type="application/ld+json">
+{
+  "@context" : "http://schema.org",
+  "@type" : "Blog",
+  "name": " {{ SITENAME }} ",
+  "url" : "{{ SITEURL }}",
+  "image": "{{ SITELOGO }}",
+  "description": "{{ SITEDESCRIPTION }}"
+}
+</script>

templates/partial/jsonld_article.html

@@ -0,0 +1,23 @@
+{% if SITELOGO %}
+  {% set default_cover = SITELOGO %}
+{% else %}
+  {% set default_cover = '{{ SITEURL }}/theme/img/profile.png' %}
+{% endif %}
+<script type="application/ld+json">
+{
+  "@context": "http://schema.org",
+  "@type": "BlogPosting",
+  "name": "{{ article.title }}",
+  "headline": "{{ article.title }}",
+  "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>

templates/partial/og.html

@@ -0,0 +1,14 @@
+{% if OG_LOCALE %}
+  {% set default_locale = OG_LOCALE %}
+{% else %}
+  {% set default_locale = 'en_US' %}
+{% endif %}
+<meta property="og:site_name" content="{{ SITENAME }}"/>
+<meta property="og:type" content="blog"/>
+<meta property="og:title" content="{{ SITENAME }}"/>
+<meta property="og:description" content="{{ SITEDESCRIPTION }}"/>
+<meta property="og:locale" content="{{ default_locale }}"/>
+<meta property="og:url" content="{{ SITEURL }}"/>
+{% if SITELOGO %}
+<meta property="og:image" content="{{ SITELOGO }}">
+{% endif %}

templates/partial/og_article.html

@@ -0,0 +1,19 @@
+{% if OG_LOCALE %}
+  {% set default_locale = OG_LOCALE %}
+{% else %}
+  {% set default_locale = 'en_US' %}
+{% endif %}
+<meta property="og:site_name" content="{{ SITENAME }}"/>
+<meta property="og:title" content="{{ article.title }}"/>
+<meta property="og:description" content="{{ article.summary|striptags }}"/>
+<meta property="og:locale" content="{{ article.metadata.get('og_locale', default_locale) }}"/>
+<meta property="og:url" content="{{ SITEURL }}/{{ article.url }}"/>
+<meta property="og:type" content="article"/>
+<meta property="article:published_time" content="{{ article.date }}"/>
+<meta property="article:modified_time" content="{{ article.modified }}"/>
+<meta property="article:author" content="{{ SITEURL }}/{{ article.author.url }}">
+<meta property="article:section" content="{{ article.category.name }}"/>
+{% for tag in article.tags %}
+<meta property="article:tag" content="{{ tag.name }}"/>
+{% endfor %}
+<meta property="og:image" content="{{ article.metadata.get('cover', SITELOGO) }}">