_includes/head.html
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>{% if page.title %}{{ page.title }}{% else %}{{ site.title }}{% endif %}</title>
<meta name="description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description }}{% endif %}" />
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:title" content="{{ site.title }}{% if page.title %} • {{ page.title }}{% endif %}" />
<meta name="twitter:description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description }}{% endif %}" />
<meta name="twitter:image" content="{{ site.url }}{{ site.baseurl }}/images/opengraph.png" />
<meta property="og:title" content="{% if page.title %}{{ page.title }}{% else %}{{ site.title }}{% endif %}" />
<meta property="og:description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description }}{% endif %}" />
<meta property="og:type" content="website" />
<meta property="og:url" content="{{ page.url | replace:'index.html',"" | prepend: site.baseurl | prepend: site.url }}" />
<meta property="og:image" content="{{ site.url }}{{ site.baseurl }}/images/opengraph.png" />
<meta property="og:image:width" content="1200" />
<meta property="og:image:height" content="630" />
<meta property="og:site_name" content="{{ site.title }}" />
<meta content="#131416" name="theme-color" />
<link href="{{ site.baseurl }}/images/apple-touch-icon.png" rel="apple-touch-icon" sizes="180x180" >
<link href="{{ site.baseurl }}/images/favicon-32x32.png" rel="icon" type="image/png" sizes="32x32" />
<link href="{{ site.baseurl }}/images/favicon-16x16.png" rel="icon" type="image/png" sizes="16x16" />
<link href="{{ site.baseurl }}/favicon.ico" type="image/x-icon" rel="icon"/>
<link href="{{ site.baseurl }}/favicon.ico" type="image/x-icon" rel="shortcut icon"/>
<link href="{{ site.baseurl }}/manifest.json" rel="manifest" >
<link href="{{ site.baseurl }}/images/safari-pinned-tab.svg" rel="mask-icon" color="#e95c5a" />
<meta content="{{ site.baseurl }}/browserconfig.xml" name="msapplication-config" />
<meta name="theme-color" content="#131416" />
<link rel="stylesheet" href="{{ site.baseurl }}/css/index.css" />
<link rel="canonical" href="{{ page.url | replace:'index.html','' | prepend: site.baseurl | prepend: site.url }}" />
<link rel="alternate" type="application/rss+xml" title="{{ site.title }}" href="{{ '/feed.xml' | prepend: site.baseurl | prepend: site.url }}" />
<link rel="stylesheet" href="//fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700,600" />
</head>