head.html

    <link rel="canonical" href="{{ site.url }}{% if site.baseurl %}{{ site.baseurl }}{% endif %}{{ page.url }}" />
    <meta name="referrer" content="origin" />
    <link rel="next" href="{{ site.baseurl }}page2/" />

    <meta property="og:site_name" content="{{ site.name }}" />
    <meta property="og:type" content="website" />
    <meta property="og:title" content="{% if page.title %}{{ page.title }}{% else %}{{ site.name }}{% endif %}" />
    <meta property="og:description" content="{% if page.description %}{{ page.description }}{% else %}{{ site.description }}{% endif %}" />
    <meta property="og:url" content="{{ site.url }}{% if site.baseurl %}{{ site.baseurl }}{% endif %}{{ page.url }}" />
    <meta property="og:image" content="{{ site.baseurl }}{% if page.cover %}{{ page.cover }}{% else %}assets/images/cover1.jpg{% endif %}" />

    <meta name="twitter:card" content="summary_large_image" />
    <meta name="twitter:title" content="{% if page.title %}{{ page.title }}{% else %}{{ site.name }}{% endif %}" />
    <meta name="twitter:description" content="{% if page.description %}{{ page.description }}{% else %}{{ site.description }}{% endif %}" />
    <meta name="twitter:url" content="{{ site.url }}{% if site.baseurl %}{{ site.baseurl }}{% endif %}{{ page.url }}" />
    <meta name="twitter:image:src" content="{{ site.baseurl }}{% if page.cover %}{{ page.cover }}{% else %}assets/images/cover1.jpg{% endif %}" />

    <script type="application/ld+json">
{
    "@context": "http://schema.org",
    "@type": "Website",
    "publisher": "{{ site.name }}",
    "name": "{% if page.title %}{{ page.title }}{% else %}{{ site.name }}{% endif %}",
    "url": "{{ site.url }}{% if site.baseurl %}{{ site.baseurl }}{% endif %}{{ page.url }}",
    "image": "{{ site.baseurl }}{% if page.cover %}{{ page.cover }}{% else %}assets/images/cover1.jpg{% endif %}",
    "description": "{% if page.description %}{{ page.description }}{% else %}{{ site.description }}{% endif %}"
}
    </script>

    <meta name="generator" content="Jekyll 3.0.0" />
    <link rel="alternate" type="application/rss+xml" title="{{ site.name }}" href="{{ site.baseurl }}feed.xml" />