diff --git a/src/css/site.css b/src/css/site.css
index ae8c29172c4..77c4df5d6e2 100644
--- a/src/css/site.css
+++ b/src/css/site.css
@@ -161,6 +161,12 @@ header h1 a {
   /*width: 50%;*/
 }
 
+img.octocat {
+  background: light-dark(transparent, #333);
+  padding: 1em 0.5em;
+  border-radius: 20%;
+}
+
 footer {
   text-align: right;
   font-size: 80%;
diff --git a/src/img/octocat.png b/src/img/octocat.png
deleted file mode 100644
index b75d74e043f..00000000000
Binary files a/src/img/octocat.png and /dev/null differ
diff --git a/src/json.cshtml b/src/json.cshtml
index 39ede35cd93..b6a1330ca85 100644
--- a/src/json.cshtml
+++ b/src/json.cshtml
@@ -1,4 +1,4 @@
-@{
+@{
 	Page.Title = "JSON Schema Store";
 	Page.Description = "JSON Schemas for common JSON file formats";
 	Layout = "~/_layout.cshtml";
@@ -130,7 +130,7 @@
 <article>
     <h3 id="contribute">Contribute</h3>
     <p>
-        <img src="/img/octocat.png" width="250" height="208" alt="Hosted on GitHub" class="left" />
+        <img src="/img/octocat.svg" width="250" height="208" alt="Hosted on GitHub" class="left octocat" />
         The goal of this API is to include schemas for all commonly
         known JSON file formats. To do that we encourage contributions in terms of new schemas,
         modifications and test files.