| <!-- 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[0] %} |
| {% 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 property="og:locale" content="{{ site.locale | replace: "-", "_" | default: "en" }}"> |
| <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 }}"> |
| |
| {% if page.header.image %} |
| <meta name="twitter:card" content="summary_large_image"> |
| <meta name="twitter:image" content="{% if page.header.image contains "://" %}{{ page.header.image }}{% else %}{{ page.header.image | absolute_url }}{% endif %}"> |
| {% else %} |
| <meta name="twitter:card" content="summary"> |
| {% if page.header.teaser %} |
| <meta name="twitter:image" content="{% if page.header.teaser contains "://" %}{{ page.header.teaser }}{% else %}{{ page.header.teaser | absolute_url }}{% endif %}"> |
| {% elsif site.og_image %} |
| <meta name="twitter:image" content="{{ site.og_image | absolute_url }}"> |
| {% 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.header.image %} |
| <meta property="og:image" content="{% if page.header.image contains "://" %}{{ page.header.image }}{% else %}{{ page.header.image | absolute_url }}{% endif %}"> |
| {% elsif page.header.overlay_image %} |
| <meta property="og:image" content="{% if page.header.overlay_image contains "://" %}{{ page.header.overlay_image }}{% else %}{{ page.header.overlay_image | absolute_url }}{% endif %}"> |
| {% elsif page.header.teaser %} |
| <meta property="og:image" content="{% if page.header.teaser contains "://" %}{{ page.header.teaser }}{% else %}{{ page.header.teaser | 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 %} |
| |
| {% if site.og_image %} |
| <script type="application/ld+json"> |
| { |
| "@context": "http://schema.org", |
| "@type": "Organization", |
| "url": {{ seo_url | jsonify }}, |
| "logo": {{ site.og_image | absolute_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" : "{{ 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.baidu-site-verification %} |
| <meta name="baidu-site-verification" content="{{ site.baidu-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 %} |
| <!-- end SEO --> |