diff --git a/_layouts/default.html b/_layouts/default.html
index 15517b5..2c581db 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -62,12 +62,17 @@
         {% endif %}
         <article itemprop="blogPost" itemscope itemtype="http://schema.org/BlogPosting">
             <h1 id="pagetitle" itemprop="name headline">{{ page.title }}</h1>
+            <link itemprop="image" href="{{ site.url }}/images/sitelogo.png" />
             <div itemprop="author" itemscope itemtype="http://schema.org/Person">
                 <meta itemprop="name" content="Markus Birth" />
                 <meta itemprop="givenName" content="Markus" />
                 <meta itemprop="familyName" content="Birth" />
                 <meta itemprop="birthDate" content="1980-11-16" />
             </div>
+            <div itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
+                <meta itemprop="name" content="Markus Birth" />
+                <link itemprop="logo" href="{{ site.url }}/images/sitelogo.png" />
+            </div>
             <meta itemprop="articleSection" content="{{ page.categories[0] }}" />
             <meta itemprop="keywords" content="{{ page.tags | join: ',' }}" />
             <meta itemprop="dateCreated" content="{% if page.created %}{{ page.created | date: '%Y-%m-%d' }}{% else %}{{ site.birthday | date: '%Y-%m-%d' }}{% endif %}" />
diff --git a/index.html b/index.html
index 826e7ef..500cb3f 100644
--- a/index.html
+++ b/index.html
@@ -21,6 +21,7 @@ layout: default
 {% for post in paginator.posts %}
     <li itemscope itemtype="http://schema.org/BlogPosting"><a itemprop="url" href="{{ post.url }}"><span itemprop="dateModified">{{ post.date | date: "%Y-%m-%d" }}</span> - <span itemprop="name headline">{{ post.title }}</span></a>
         <link itemprop="mainEntityOfPage" href="{{ site.url }}{{ post.url }}" />
+        <link itemprop="image" href="{{ site.url }}/images/sitelogo.png" />
         <meta itemprop="datePublished" content="{{ post.created | date: '%Y-%m-%d' }}" />
     {% if post.language == 'de' %}
         <img class="emoji" title="&#x3a;de&#x3a;" alt="&#x3a;de&#x3a;" src="https://assets-cdn.github.com/images/icons/emoji/de.png" width="20" height="20" align="absmiddle" />
@@ -36,6 +37,7 @@ layout: default
         </div>
         <div itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
           <meta itemprop="name" content="Markus Birth" />
+          <link itemprop="logo" href="{{ site.url }}/images/sitelogo.png" />
         </div>
     </li>
 {% endfor %}