{% if config.extra.favicon180 %}
    <link rel="apple-touch-icon" type="image/png" sizes="180x180" href="{{ get_url(path=config.extra.favicon180) }}"/>
{% endif %}
{% if config.extra.favicon32 %}
    <link rel="icon" type="image/png" sizes="32x32" href="{{ get_url(path=config.extra.favicon32) }}"/>
{% endif %}
{% if config.extra.favicon16 %}
    <link rel="icon" type="image/png" sizes="16x16" href="{{ get_url(path=config.extra.favicon16) }}"/>
{% endif %}
{%- if config.author %}
  <meta name="author" content="{{ config.author }}" />
{%- endif %}
  <meta name="copyright" content="{{ config.author }}" />
{%- if page.extra.keywords and config.extra.keywords %}
  <meta name="keywords" content="{{ page.extra.keywords }}, {{ config.extra.keywords }}" />
{%- elif page.extra.keywords %}
  <meta name="keywords" content="{{ page.extra.keywords }}" />
{%- elif config.extra.keywords %}
  <meta name="keywords" content="{{ config.extra.keywords }}" />
{%- endif %}
{%- if config.extra.google %}
  <meta name="google-site-verification" content="{{ config.extra.google | safe }}" />
{%- endif %}

{%- if config.extra.bing %}
  <meta name="msvalidate.01" content="{{ config.extra.bing | safe}}" />
{%- endif %}
<meta property="twitter:title" content="{{ page.title | default(value=config.title) | safe }}" />
{%- if config.extra.twitter_meta %}
  <meta name="twitter:site" content="@{{ config.extra.twitter_meta }}" />
  <meta name="twitter:creator" content="@{{ config.extra.twitter_meta }}" />
{%- endif %}