diff --git a/src/www/index.html b/src/www/index.html
index 4080c51a..76959141 100644
--- a/src/www/index.html
+++ b/src/www/index.html
@@ -12,7 +12,13 @@
 </head>
 
 <body class="bg-gray-50">
-
+<script src="https://cdn.jsdelivr.net/npm/darkmode-js@1.5.7/lib/darkmode-js.min.js"></script>
+<script>
+  function addDarkmodeWidget() {
+    new Darkmode().showWidget();
+  }
+  window.addEventListener('load', addDarkmodeWidget);
+</script>
   <div id="app">
 
     <div class="container mx-auto max-w-3xl">
@@ -482,4 +488,4 @@
   <script src="./js/app.js"></script>
 </body>
 
-</html>
\ No newline at end of file
+</html>
