canonical urls

src/pages/_includes/layout/og.html

+<meta name="canonical" content="{{ site.preview-url }}{{ page.url | replace: 'index.html', '' }}">
 <meta name="twitter:image:src" content="{% if jekyll.environment != 'development' %}{{ site.preview-url }}{% endif %}/static/og.png">
 <meta name="twitter:site" content="@tabler_ui">
 <meta name="twitter:card" content="summary">

src/pages/_layouts/base.html

@@ -9,7 +9,7 @@
 
 	<title>{% if title %}{{ title }} - {% endif %}{% if site.title %}{{ site.title }} - {% endif %}{{ site.description }}</title>
 
-	{% if jekyll.environment == 'preview' %}
+	{% if jekyll.environment != 'preview' %}
 		{% include layout/analytics.html %}
 
 		<meta name="msapplication-TileColor" content="{{ site.data.colors.blue }}"/>