diff --git a/_app/_includes/_amsf.html b/_app/_includes/_amsf.html
index 796d56a03..f5956dc60 100644
--- a/_app/_includes/_amsf.html
+++ b/_app/_includes/_amsf.html
@@ -162,6 +162,17 @@
   {% endif %}
 {% endcapture %}
 
+{% comment %}
+  Page type (used by Twitter Cards)
+{% endcomment %}
+{% capture amsf_page_type_twitter %}
+  {% if site.tc_large_image or page.tc_large_image %}
+    summary_large_image
+  {% else %}
+    summary
+  {% endif %}
+{% endcapture %}
+
 {% comment %}
   Page language tag
 {% endcomment %}
diff --git a/_app/_includes/themes/curtana/includes/open-graph.html b/_app/_includes/themes/curtana/includes/open-graph.html
index de3262484..4042d6d3b 100644
--- a/_app/_includes/themes/curtana/includes/open-graph.html
+++ b/_app/_includes/themes/curtana/includes/open-graph.html
@@ -9,11 +9,15 @@
 <meta property="og:description" content="{{ amsf_site_desc | strip }}">
 <meta property="og:image" content="{{ amsf_page_thumb | strip }}">
 
-<meta name="twitter:card" content="summary">
-<meta name="twitter:title" content="{{ amsf_page_title }}">
-<meta name="twitter:url" content="{{ amsf_page_url }}">
-<meta name="twitter:description" content="{{ amsf_site_desc | strip }}">
-<meta name="twitter:image" content="{{ amsf_page_thumb | strip }}">
+<meta name="twitter:card" content="{{ amsf_page_type_twitter | strip }}">
+
+{% if site.twitter %}
+  <meta name="twitter:site" content="@{{ site.twitter }}">
+{% endif %}
+
+{% if author.twitter %}
+  <meta name="twitter:creator" content="@{{ author.twitter }}">
+{% endif %}
 
 {% if page.path contains "_posts" %}
   <meta property="article:published_time" content="{{ amsf_page_pubdate | date_to_xmlschema }}">
@@ -23,11 +27,3 @@
   <meta name="twitter:label2" value="Reading time">
   <meta name="twitter:data2" value="{{ amsf_page_reading_time | strip }}">
 {% endif %}
-
-{% if site.twitter %}
-  <meta name="twitter:site" content="@{{ site.twitter }}">
-{% endif %}
-
-{% if author.twitter %}
-  <meta name="twitter:creator" content="@{{ author.twitter }}">
-{% endif %}
diff --git a/_config.init.yml b/_config.init.yml
index 4cc2d4ccd..8e4570ec9 100644
--- a/_config.init.yml
+++ b/_config.init.yml
@@ -101,14 +101,14 @@ url:            https://sparanoid.com
 # Media assets URL used in posts, without trailing slash. ie.
 # `<img src="{{ site.file }}/image.png">`. In the most cases this URL should be
 # powered by a CDN provider
-file:           //d349cztnlupsuf.cloudfront.net
+file:           https://d349cztnlupsuf.cloudfront.net
 
 # Download files URL used in posts, ie. href="{{ site.download }}/package.zip",
 # this should also be a CDN link just like `site.file`. There're no notable
 # differences in `site.file` and `site.download`, I just use the one for post
 # images and the other for large download files. That's it. Remove or ignore
 # this if you don't need it.
-download:       //d1bmx7s6749k4k.cloudfront.net
+download:       https://d1bmx7s6749k4k.cloudfront.net
 
 # Google Analytics tracking code
 google_analytics:
@@ -119,6 +119,10 @@ google_analytics:
 # Site Twitter account handle
 twitter:        sparanoid
 
+# Use summary card with large image for Twitter Cards, require theme support
+# Default:      false
+tc_large_image: false
+
 # Force UTF-8 encoding, enable this will simply add <meta charset="utf-8"> to
 # the head of your pages
 # Default:      false
@@ -133,7 +137,7 @@ link_blog:      false
 # Default:      false
 rss_excerpt:    false
 
-# Show generator credits
+# Show or hide generator credits, require theme support
 # Default:      true
 credits:        true
 
diff --git a/_config.yml b/_config.yml
index 4afc331e5..55af8ab06 100644
--- a/_config.yml
+++ b/_config.yml
@@ -101,14 +101,14 @@ url:            https://sparanoid.com
 # Media assets URL used in posts, without trailing slash. ie.
 # `<img src="{{ site.file }}/image.png">`. In the most cases this URL should be
 # powered by a CDN provider
-file:           //d349cztnlupsuf.cloudfront.net
+file:           https://d349cztnlupsuf.cloudfront.net
 
 # Download files URL used in posts, ie. href="{{ site.download }}/package.zip",
 # this should also be a CDN link just like `site.file`. There're no notable
 # differences in `site.file` and `site.download`, I just use the one for post
 # images and the other for large download files. That's it. Remove or ignore
 # this if you don't need it.
-download:       //d1bmx7s6749k4k.cloudfront.net
+download:       https://d1bmx7s6749k4k.cloudfront.net
 
 # Google Analytics tracking code
 google_analytics:
@@ -119,6 +119,10 @@ google_analytics:
 # Site Twitter account handle
 twitter:        sparanoid
 
+# Use summary card with large image for Twitter Cards, require theme support
+# Default:      false
+tc_large_image: false
+
 # Force UTF-8 encoding, enable this will simply add <meta charset="utf-8"> to
 # the head of your pages
 # Default:      false
@@ -133,7 +137,7 @@ link_blog:      false
 # Default:      false
 rss_excerpt:    false
 
-# Show generator credits
+# Show or hide generator credits, require theme support
 # Default:      true
 credits:        true