diff --git a/_includes/_author-bio.html b/_includes/_author-bio.html
index fb6be480..c01c5323 100644
--- a/_includes/_author-bio.html
+++ b/_includes/_author-bio.html
@@ -1,4 +1,10 @@
-<img src="{{ site.url }}/images/{{ site.owner.avatar }}" class="bio-photo" alt="{{ site.owner.name }} bio photo"></a>
+{% if site.owner.avatar contains 'http://' %}
+	<img src="{{ site.owner.avatar }}" class="bio-photo" alt="{{ site.owner.name }} bio photo"></a>
+{% elsif site.owner.avatar contains 'https://' %}
+	<img src="{{ site.owner.avatar }}" class="bio-photo" alt="{{ site.owner.name }} bio photo"></a>
+{% else %}
+	<img src="{{ site.url }}/images/{{ site.owner.avatar }}" class="bio-photo" alt="{{ site.owner.name }} bio photo"></a>
+{% endif %}
 <h3>{{ site.owner.name }}</h3>
 <p>{{ site.owner.bio }}</p>
 {% if site.owner.twitter %}<a href="http://twitter.com/{{ site.owner.twitter }}" class="author-social" target="_blank"><i class="icon-twitter"></i> Twitter</a>{% endif %}
diff --git a/_includes/_head.html b/_includes/_head.html
index 8a726f1b..d6c020a7 100644
--- a/_includes/_head.html
+++ b/_includes/_head.html
@@ -3,13 +3,43 @@
 <meta name="description" content="{{ page.description }}">
 <meta name="keywords" content="{{ page.tags | join: ', ' }}">
 {% if site.owner.twitter %}<!-- Twitter Cards -->
-{% if page.image.feature %}<meta name="twitter:card" content="summary_large_image">
-<meta name="twitter:image" content="{{ site.url }}/images/{{ page.image.feature }}">
-{% else %}<meta name="twitter:card" content="summary">
-<meta name="twitter:image" content="{% if page.image.thumb %}{{ site.url }}/images/{{ page.image.thumb }}{% else %}{{ site.url }}/images/{{ site.logo }}{% endif %}">{% endif %}
-<meta name="twitter:title" content="{% if page.title %}{{ page.title }}{% else %}{{ site.title }}{% endif %}">
-<meta name="twitter:description" content="{% if page.description %}{{ page.description }}{% else %}{{ site.description }}{% endif %}">
-<meta name="twitter:creator" content="@{{ site.owner.twitter }}">{% endif %}
+	{% if page.image.feature %}
+		<meta name="twitter:card" content="summary_large_image">
+		<meta name="twitter:image" content=
+			{% if page.image.feature contains 'http://' %}
+				"{{ page.image.feature }}"
+			{% elsif page.image.feature contains 'https://' %}
+				"{{ page.image.feature }}"
+			{% else %}
+				"{{ site.url }}/images/{{ page.image.feature }}"
+			{% endif %}
+		>
+	{% else %}
+		<meta name="twitter:card" content="summary">
+		<meta name="twitter:image" content=
+			{% if page.image.thumb %}
+				{% if page.image.thumb contains 'http://' %}
+						"{{ page.image.thumb }}"
+				{% elsif page.image.thumb contains 'https://' %}
+					"{{ page.image.thumb }}"
+				{% else %}
+						"{{ site.url }}/images/{{ page.image.thumb }}"
+				{% endif %}
+			{% else %}
+				{% if site.logo contains 'http://' %}
+						"{{ site.logo }}"
+				{% elsif site.logo contains 'https://' %}
+					"{{ site.logo }}"
+				{% else %}
+						"{{ site.url }}/images/{{ site.logo }}"
+				{% endif %}
+			{% endif %}
+		>
+	{% endif %}
+	<meta name="twitter:title" content="{% if page.title %}{{ page.title }}{% else %}{{ site.title }}{% endif %}">
+	<meta name="twitter:description" content="{% if page.description %}{{ page.description }}{% else %}{{ site.description }}{% endif %}">
+	<meta name="twitter:creator" content="@{{ site.owner.twitter }}">
+{% endif %}
 
 <!-- Open Graph -->
 <meta property="og:locale" content="en_US">
diff --git a/_layouts/home.html b/_layouts/home.html
index f889e35f..bddda197 100644
--- a/_layouts/home.html
+++ b/_layouts/home.html
@@ -13,10 +13,22 @@
 
 {% include _navigation.html %}
 
-{% if page.image.feature %}<div class="image-wrap">
-  <img src="{{ site.url }}/images/{{ page.image.feature }}" alt="{{ page.title }} feature image">
-  {% if page.image.credit %}<span class="image-credit">Photo Credit: <a href="{{ page.image.creditlink }}">{{ page.image.credit }}</a></span>{% endif %}
-</div><!-- /.image-wrap -->{% endif %}
+{% if page.image.feature %}
+  <div class="image-wrap">
+  <img src=
+    {% if page.image.feature contains 'http://' %}
+      "{{ page.image.feature }}"
+    {% elsif page.image.feature contains 'https://' %}
+      "{{ page.image.feature }}"
+    {% else %}
+      "{{ site.url }}/images/{{ page.image.feature }}"
+    {% endif %}
+  alt="{{ page.title }} feature image">
+  {% if page.image.credit %}
+    <span class="image-credit">Photo Credit: <a href="{{ page.image.creditlink }}">{{ page.image.credit }}</a></span>
+  {% endif %}
+  </div><!-- /.image-wrap -->
+{% endif %}
 
 <div class="article-author-side">
   {% include _author-bio.html %}
diff --git a/_layouts/page.html b/_layouts/page.html
index ae3ad7fa..62df57e2 100644
--- a/_layouts/page.html
+++ b/_layouts/page.html
@@ -13,10 +13,22 @@
 
 {% include _navigation.html %}
 
-{% if page.image.feature %}<div class="image-wrap">
-  <img src="{{ site.url }}/images/{{ page.image.feature }}" alt="{{ page.title }} feature image">
-  {% if page.image.credit %}<span class="image-credit">Photo Credit: <a href="{{ page.image.creditlink }}">{{ page.image.credit }}</a></span>{% endif %}
-</div><!-- /.image-wrap -->{% endif %}
+{% if page.image.feature %}
+  <div class="image-wrap">
+  <img src=
+    {% if page.image.feature contains 'http://' %}
+      "{{ page.image.feature }}"
+    {% elsif page.image.feature contains 'https://' %}
+      "{{ page.image.feature }}"
+    {% else %}
+      "{{ site.url }}/images/{{ page.image.feature }}"
+    {% endif %}
+  alt="{{ page.title }} feature image">
+  {% if page.image.credit %}
+    <span class="image-credit">Photo Credit: <a href="{{ page.image.creditlink }}">{{ page.image.credit }}</a></span>
+  {% endif %}
+  </div><!-- /.image-wrap -->
+{% endif %}
 
 <div id="main" role="main">
   <div class="article-author-side">
diff --git a/_layouts/post-index.html b/_layouts/post-index.html
index 50f32c28..dc70107e 100644
--- a/_layouts/post-index.html
+++ b/_layouts/post-index.html
@@ -13,10 +13,22 @@
 
 {% include _navigation.html %}
 
-{% if page.image.feature %}<div class="image-wrap">
-  <img src="{{ site.url }}/images/{{ page.image.feature }}" alt="{{ page.title }} feature image" itemprop="primaryImageOfPage">
-  {% if page.image.credit %}<span class="image-credit">Photo Credit: <a href="{{ page.image.creditlink }}">{{ page.image.credit }}</a></span>{% endif %}
-</div><!-- /.image-wrap -->{% endif %}
+{% if page.image.feature %}
+  <div class="image-wrap">
+  <img src=
+    {% if page.image.feature contains 'http://' %}
+      "{{ page.image.feature }}"
+    {% elsif page.image.feature contains 'https://' %}
+      "{{ page.image.feature }}"
+    {% else %}
+      "{{ site.url }}/images/{{ page.image.feature }}"
+    {% endif %}
+  alt="{{ page.title }} feature image">
+  {% if page.image.credit %}
+    <span class="image-credit">Photo Credit: <a href="{{ page.image.creditlink }}">{{ page.image.credit }}</a></span>
+  {% endif %}
+  </div><!-- /.image-wrap -->
+{% endif %}
 
 <div class="article-author-side">
   {% include _author-bio.html %}
diff --git a/_layouts/post.html b/_layouts/post.html
index 1d9df917..06d8bccb 100644
--- a/_layouts/post.html
+++ b/_layouts/post.html
@@ -13,10 +13,22 @@
 
 {% include _navigation.html %}
 
-{% if page.image.feature %}<div class="image-wrap">
-  <img src="{{ site.url }}/images/{{ page.image.feature }}" alt="{{ page.title }} feature image">
-  {% if page.image.credit %}<span class="image-credit">Photo Credit: <a href="{{ page.image.creditlink }}">{{ page.image.credit }}</a></span>{% endif %}
-</div><!-- /.image-wrap -->{% endif %}
+{% if page.image.feature %}
+  <div class="image-wrap">
+  <img src=
+    {% if page.image.feature contains 'http://' %}
+      "{{ page.image.feature }}"
+    {% elsif page.image.feature contains 'https://' %}
+      "{{ page.image.feature }}"
+    {% else %}
+      "{{ site.url }}/images/{{ page.image.feature }}"
+    {% endif %}
+  alt="{{ page.title }} feature image">
+  {% if page.image.credit %}
+    <span class="image-credit">Photo Credit: <a href="{{ page.image.creditlink }}">{{ page.image.credit }}</a></span>
+  {% endif %}
+  </div><!-- /.image-wrap -->
+{% endif %}
 
 <div id="main" role="main">
   <div class="article-author-side">