diff --git a/404.html b/404.html
index 48191cb..4b72c9d 100644
--- a/404.html
+++ b/404.html
@@ -75,6 +75,9 @@
       font-style: italic;
       opacity: 0.8;
     }
+    .source-link {
+      font-size: 0.75em;
+    }
     #input-link {
       padding: 5px 8px;
       border: 0;
@@ -171,6 +174,7 @@
       <label for="settings-qr"> Output QR code</label><br>
     </span>
     <br><br>
+    <a class="source-link" href="https://github.com/p2r3/ha.mr">Source code on GitHub</a>
 
   </div>
 
diff --git a/index.html b/index.html
index 48191cb..4b72c9d 100644
--- a/index.html
+++ b/index.html
@@ -75,6 +75,9 @@
       font-style: italic;
       opacity: 0.8;
     }
+    .source-link {
+      font-size: 0.75em;
+    }
     #input-link {
       padding: 5px 8px;
       border: 0;
@@ -171,6 +174,7 @@
       <label for="settings-qr"> Output QR code</label><br>
     </span>
     <br><br>
+    <a class="source-link" href="https://github.com/p2r3/ha.mr">Source code on GitHub</a>
 
   </div>