update

Author: jaschadub

blog/_includes/meta.html

@@ -94,6 +94,10 @@
 <meta name="twitter:image:alt" content="{{ site.name }} - {{ site.description }}" />
 {% endif %}
 
+<!-- Additional Twitter Card properties for large image -->
+<meta name="twitter:image:width" content="1200" />
+<meta name="twitter:image:height" content="630" />
+
 <!-- Additional SEO Meta Tags -->
 <link rel="canonical" href="{{ site.url }}{{ site.baseurl }}{{ page.url }}" />