<!– begin SEO –> {% if site.url %}

{% assign seo_url = site.url | append: site.baseurl %}

{% endif %} {% assign seo_url = seo_url | default: site.github.url %}

{% if page.title %}

{% assign seo_title = page.title | append: " " | append: site.title_separator | append: " " | append: site.title %}

{% endif %}

{% if seo_title %}

{% assign seo_title = seo_title | markdownify | strip_html | strip_newlines | escape_once %}

{% endif %}

{% if site.url %}

{% assign canonical_url = page.url | replace: "index.html", "" | prepend: site.url %}

{% endif %}

<title>{{ seo_title | default: site.title }}{% if paginator %}{% unless paginator.page == 1 %} {{ site.title_separator }} {{ site.data.ui-text.page | default: “Page” }} {{ paginator.page }}{% endunless %}{% endif %}</title>

{% assign seo_description = page.description | default: page.excerpt | default: site.description %} {% if seo_description %}

{% assign seo_description = seo_description | markdownify | strip_html | strip_newlines | escape_once %}

{% endif %}

<meta name=“description” content=“{{ seo_description }}”>

{% assign seo_author = page.author | default: page.author | default: site.author.name %}

<meta name=“author” content=“{{ seo_author }}”>

<meta property=“og:locale” content=“{{ site.locale | replace: ”-“, ”_“ | default: ”en_US“ }}”> <meta property=“og:site_name” content=“{{ site.title }}”> <meta property=“og:title” content=“{{ page.title | default: site.title | markdownify | strip_html | strip_newlines | escape_once }}”>

{% if seo_url %}

<link rel="canonical" href="{{ page.url | prepend: seo_url | replace: "/index.html", "/" }}">
<meta property="og:url" content="{{ page.url | prepend: seo_url | replace: "/index.html", "/" }}">

{% endif %}

{% if page.excerpt %}

<meta property="og:description" content="{{ seo_description }}">

{% endif %}

{% if site.twitter.username %}

<meta name="twitter:site" content="@{{ site.twitter.username | replace: "@", "" }}">
<meta name="twitter:title" content="{{ page.title | default: site.title | markdownify | strip_html | strip_newlines | escape_once }}">
<meta name="twitter:description" content="{{ seo_description }}">
<meta name="twitter:url" content="{{ canonical_url }}">

<meta name="twitter:card" content="summary">
{% if page.og_image %}
  <meta name="twitter:image" content="{% if page.header.image contains "://" %}{{ page.header.image }}{% else %}{{ page.header.image | absolute_url }}{% endif %}">
{% elsif site.og_image %}
  <meta name="twitter:image" content="{{ site.og_image | absolute_url }}">
{% endif %}
<meta name="twitter:creator" content="@{{ site.twitter.username }}">

{% endif %}

{% if page.og_image %}

<meta property="og:image" content="{% if page.header.image contains "://" %}{{ page.header.image }}{% else %}{{ page.header.image | absolute_url }}{% endif %}">

{% elsif site.og_image %}

<meta property="og:image" content="{% if site.og_image contains "://" %}{{ site.og_image }}{% else %}{{ site.og_image | absolute_url }}{% endif %}">

{% endif %}

{% if page.date %}

<meta property="og:type" content="article">
<meta property="article:published_time" content="{{ page.date | date_to_xmlschema }}">

{% endif %}

{% if paginator.previous_page %}

<link rel="prev" href="{{ paginator.previous_page_path | prepend: seo_url }}">

{% endif %} {% if paginator.next_page %}

<link rel="next" href="{{ paginator.next_page_path | prepend: seo_url }}">

{% endif %}