diff --git a/tool/template-base.html b/tool/template-base.html
index 1fdc3a00bf..5b2d5fcc41 100644
--- a/tool/template-base.html
+++ b/tool/template-base.html
@@ -81,6 +81,11 @@
         </div><!--/.nav-collapse -->
       </div>
     </div>
+    <script type="text/javascript">
+    if (window.location.host.indexOf("github.io") > -1) {
+        document.write("<div style='background-color:red; color:white; position:absolute; top: 50px; right: 150px; padding: 10px 20px;'>DRAFT</div>");
+    }
+    </script>
     <div class='wrapper'>
         {% block contentroot %}{% endblock %}
     </div>