<!-- 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[site.locale].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[0] | default: site.author.name %}

{% if seo_author %}

{% if seo_author.twitter %}

{% assign seo_author_twitter = seo_author.twitter %}

{% else %}

{% if site.data.authors and site.data.authors[seo_author] %}

{% assign seo_author_twitter = site.data.authors[seo_author].twitter %}

{% else %}

{% assign seo_author_twitter = seo_author %}

{% endif %}

{% endif %}

{% assign seo_author_twitter = seo_author_twitter | replace: "@", "" %}

{% endif %}

<meta name="author" content="{{ seo_author }}">

<meta name="naver-site-verification" content="b82306681a7f295c96378798aef6849495be33fd"/>

<meta property="og:type" content="website">

<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 %}

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

{% assign page_large_image = page.header.og_image | default: page.header.overlay_image | default: page.header.image %}

{% unless page_large_image contains '://' %}

{% assign page_large_image = page_large_image | absolute_url %}

{% endunless %}

{% assign page_large_image = page_large_image | escape %}

{% assign page_teaser_image = page.header.teaser | default: site.og_image %}

{% unless page_teaser_image contains '://' %}

{% assign page_teaser_image = page_teaser_image | absolute_url %}

{% endunless %}

{% assign page_teaser_image = page_teaser_image | escape %}

{% assign site_og_image = site.og_image %}

{% unless site_og_image contains '://' %}

{% assign site_og_image = site_og_image | absolute_url %}

{% endunless %}

{% assign site_og_image = site_og_image | escape %}

{% 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 }}">

{% if page_large_image %}

<meta name="twitter:card" content="summary_large_image">

<meta name="twitter:image" content="{{ page_large_image }}">

{% else %}

<meta name="twitter:card" content="summary">

{% if page_teaser_image %}

<meta name="twitter:image" content="{{ page_teaser_image }}">

{% endif %}

{% endif %}

{% if seo_author_twitter %}

<meta name="twitter:creator" content="@{{ seo_author_twitter }}">

{% endif %}

{% endif %}

{% if site.facebook %}

{% if site.facebook.publisher %}

<meta property="article:publisher" content="{{ site.facebook.publisher }}">

{% endif %}

{% if site.facebook.app_id %}

<meta property="fb:app_id" content="{{ site.facebook.app_id }}">

{% endif %}

{% endif %}

{% if page_large_image %}

<meta property="og:image" content="{{ page_large_image }}">

{% elsif page_teaser_image %}

<meta property="og:image" content="{{ page_teaser_image }}">

{% 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 %}

{% if site.og_image %}

<script type="application/ld+json">

{

"@context": "http://schema.org",

"@type": "Organization",

"url": {{ seo_url | jsonify }},

"logo": {{ site_og_image | 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" : "{{ site.social.name | default: site.name }}",

"url" : {{ seo_url | jsonify }},

"sameAs" : {{ site.social.links | jsonify }}

}

</script>

{% endif %}

{% if site.google_site_verification %}

<meta name="google-site-verification" content="{{ site.google_site_verification }}" />

{% endif %}

{% if site.bing_site_verification %}

<meta name="msvalidate.01" content="{{ site.bing_site_verification }}">

{% endif %}

{% if site.alexa_site_verification %}

<meta name="alexaVerifyID" content="{{ site.alexa_site_verification }}">

{% endif %}

{% if site.yandex_site_verification %}

<meta name="yandex-verification" content="{{ site.yandex_site_verification }}">

{% endif %}

{% if site.naver-site-verification %}

<meta name="naver-site-verification" content="{{ site.naver-site-verification }}">

{% endif %}

<!-- end SEO -->