{% if page.title %}
{% assign page_title = page.title | escape %}
{% else %}
{% assign page_title = site.title | escape %}
{% endif %}
{% if page.author.name %}
{% assign page_author = page.author.name | default: nil | escape %} {% assign twitter_creator = page.twitter.username | default: site.twitter.site | default: nil | escape %}
{% else %}
{% assign page_author = site.author.name | default: nil | escape %} {% assign twitter_creator = site.twitter.username | default: nil | escape %}
{% endif %}
{% assign page_description = page.excerpt | default: page.tagline | default: site.description | strip_html | normalize_whitespace | truncate: 300 | escape %}
{%if page.image %}
{% assign page_image = page.image | absolute_url %}
{%else if site.image %}
{% assign page_image = site.image | absolute_url %}
{%endif %}
{% assign abs_url = '' | absolute_url %} {% assign canonical_url = page.url | replace:'index.html','' | prepend: abs_url %}
<!– Place this data between the <head> tags of your website –> {%if page_author %}
<meta name="author" content="{{ page_author }}" />
{%endif %} <meta name=“description” content=“{{ page_description }}” /> {%if page.tags.size > 0 %}
<meta name="keywords" itemprop="tags" content="{{ page.tags | join: ', ' | escape }}"/>
{%endif %} {%if page.keywords %}
<meta name="keywords" itemprop="keywords" content="{{ page.keywords | escape }}" />
{%endif %} {%if page.categories.size > 0 %}
<meta name="keywords" itemprop="categories" content="{{ page.categories | join: ', ' | escape }}" />
{%endif %} {%if page.category %}
<meta name="keywords" itemprop="category" content="{{ category | escape }}" />
{%endif %}
<!– Twitter Card data –> <meta name=“twitter:card” content=“summary_large_image” />
{%if site.twitter.site %}
<meta name="twitter:site" content="@{{ site.twitter.site }}" />
{%endif %}
<meta name=“twitter:title” content=“{{ page_title }}” /> <meta name=“twitter:description” content=“{{ page_description }}” />
{%if twitter_creator %}
<meta name="twitter:creator" content="@{{ twitter_creator }}" />
{%endif %}
<!– Twitter summary card with large image must be at least 280x150px –> {%if page_image %}
<meta name="twitter:image:src" content="{{ page_image }}" /> <meta name="twitter:image" content="{{ page_image }}" />
{%endif %} <meta name=“twitter:url” content=“{{ canonical_url }}” />
<!– Open Graph data –> <meta property=“og:title” content=“{{ page_title }}” /> <meta property=“og:type” content=“article” /> <meta property=“og:url” content=“{{ canonical_url }}” />
{%if page_image %}
<meta property="og:image" content="{{ page_image }}" />
{%endif %} <meta property=“og:description” content=“{{ page_description }}” /> <meta property=“og:site_name” content=“{{ site.title }}” />
{% if page-lang == “en” %}
{% assign page-lang-country = "en_US" %}
{% elsif page-lang == “it” %}
{% assign page-lang-country = "it_IT" %}
{% endif %} <meta property=“og:locale” content=“{{ page-lang-country }}” />
{%if page.date %}
<meta property="article:published_time" content="{{ page.date | date_to_xmlschema }}" />
{%endif %} {%if page.modified_date %} <meta property=“og:updated_time” content=“{{ page.modified_date | date_to_xmlschema }}” /> <meta property=“article:modified_time” content=“{{ page.modified_date | date_to_xmlschema }}” /> {%endif %}
{%if page.tags %}
{% for tag in page.tags %} <meta property="article:tag" content="{{ tag | escape }}" /> {% endfor %}
{%endif %}
{%if page.keywords %}
{% assign keywordsList = page.keywords | split:', ' %} {% for keyword in keywordsList %} <meta property="article:tag" content="{{ keyword | escape }}" /> {% endfor %}
{%endif %}
{%if page.categories %}
{% for category in page.categories %} <meta property="article:tag" content="{{ category | escape }}" /> {% endfor %}
{%endif %}
{%if page.category %}
<meta property="article:tag" content="{{ category | escape }}" />
{%endif %}