<!-- Facebook -->
<meta property="og:title" content="{% if not is_front_page %}{{ post.title }} - {% endif %}{{ site.name }} - {{ site.description }}" />
<meta property="og:site_name" content="{{ site.name }}" />
<meta property="og:description" content="{{ post.preview.length(50).force.read_more(false) }}" />
<meta property="og:url" content="{{ post.link }}" />
<meta property="og:image" content="{% if post.thumbnail %}{{ post.thumbnail.src|resize(600) }}{% else %}{{ theme.link }}/images/social/facebook-preview.jpg{% endif %}" />
<meta property="og:type" content="website" />

<!-- Twitter -->
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:title" content="{% if not is_front_page %}{{ post.title }} - {% endif %}{{ site.name }} - {{ site.description }}" />
<meta name="twitter:description" content="{{ post.preview.length(50).force.read_more(false) }}" />
<meta name="twitter:url" content="{{ post.link }}" />
<meta name="twitter:image" content="{% if post.thumbnail %}{{ post.thumbnail.src|resize(600) }}{% else %}{{ theme.link }}/images/social/twitter-preview.jpg{% endif %}" />