The testing was already unbearable.
`Facebook Debugger <https://developers.facebook.com/tools/debug/>`_ or
`Twitter Card Validator <https://cards-dev.twitter.com/validator>`_.
+It's possible to disable rendering of all social meta tags (for example for
+testing purposes) by setting :py:`M_DISABLE_SOCIAL_META_TAGS` to :py:`True`.
+
`Pages`_
========
<!DOCTYPE html>
-<html lang="{% if page and page.lang %}{{ page.lang }}{% elif article and article.lang %}{{ article.lang }}{% else %}{{ DEFAULT_LANG }}{%endif %}" prefix="og: http://ogp.me/ns#">
+<html lang="{% if page and page.lang %}{{ page.lang }}{% elif article and article.lang %}{{ article.lang }}{% else %}{{ DEFAULT_LANG }}{%endif %}"{% if not M_DISABLE_SOCIAL_META_TAGS %} prefix="og: http://ogp.me/ns#"{% endif %}>
<head>
<meta charset="UTF-8" />
<title>{% block title %}{{ SITENAME|e }}{% endblock title %}</title>
{% endif %}
{% block meta %}
{% endblock meta %}
+ {% if not M_DISABLE_SOCIAL_META_TAGS %}
{% if M_SOCIAL_TWITTER_SITE %}
<meta name="twitter:site" content="{{ M_SOCIAL_TWITTER_SITE }}" />
{% endif %}
{% endif %}
{% block social %}
{% endblock social %}
+ {% endif %}
</head>
<body>
<header><nav id="navigation"{% if page and page.landing and page.cover %} class="m-navbar-landing"{% endif %}{% if article and article.cover %} class="m-navbar-jumbo"{% endif %}>