diff --git a/index.html b/index.html
index 64f5ba7..5c6c5a0 100644
--- a/index.html
+++ b/index.html
@@ -3,6 +3,9 @@
 
   <head>
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+    
+     <!--speedup loading-->
+     <link rel="modulepreload" href="/src/launch.js">
 
     <script src='ace/ace.js'></script>
     <script src='ace/keybinding-vim.js'></script>
