diff --git a/app.html b/app.html
index 5f07d838..e5e42f5d 100644
--- a/app.html
+++ b/app.html
@@ -11,6 +11,17 @@
     <link href="app.css" rel="stylesheet" type="text/css" />
   </head>
   <body>
+
+    <!-- Google Tag Manager -->
+    <noscript><iframe src="//www.googletagmanager.com/ns.html?id=GTM-PQLCXB"
+    height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+    <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+    new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+    j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+    '//www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+    })(window,document,'script','dataLayer','GTM-PQLCXB');</script>
+    <!-- End Google Tag Manager -->
+
     <div id="sidebar-menu" class="split split-horizontal" style=""></div>
     <div id="main-content" class="split split-horizontal container-fluid" style="">
       <div class="keymap keymap--qwerty">
