diff --git a/public/index.html b/public/index.html
index 221a7d5c..58467e13 100644
--- a/public/index.html
+++ b/public/index.html
@@ -1,18 +1,26 @@
 <!DOCTYPE html>
 <html lang="en">
-
-<head>
-	<meta charset="utf-8">
-	<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
-	<meta name="theme-color" content="#000000">
-	<!--
+  <head>
+    <meta charset="utf-8" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1, shrink-to-fit=no"
+    />
+    <meta name="theme-color" content="#000000" />
+    <!--
       manifest.json provides metadata used when your web app is added to the
       homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
     -->
-	<link rel="manifest" href="%PUBLIC_URL%/manifest.json">
-	<link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
-	<link rel="preload" href="https://uploads.codesandbox.io/uploads/user/ed077012-e728-4a42-8395-cbd299149d62/AflB-FG_Virgil.ttf" as="font" type="font/ttf" crossorigin="anonymous">
-<!--
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
+    <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico" />
+    <link
+      rel="preload"
+      href="https://uploads.codesandbox.io/uploads/user/ed077012-e728-4a42-8395-cbd299149d62/AflB-FG_Virgil.ttf"
+      as="font"
+      type="font/ttf"
+      crossorigin="anonymous"
+    />
+    <!--
       Notice the use of %PUBLIC_URL% in the tags above.
       It will be replaced with the URL of the `public` folder during the build.
       Only files inside the `public` folder can be referenced from the HTML.
@@ -21,15 +29,28 @@
       work correctly both with client-side routing and a non-root public URL.
       Learn how to configure a non-root public URL by running `npm run build`.
     -->
-	<title>Excalidraw</title>
-</head>
+    <title>Excalidraw</title>
 
-<body>
-	<noscript>
-		You need to enable JavaScript to run this app.
-	</noscript>
-	<div id="root"></div>
-	<!--
+    <script
+      async
+      src="https://www.googletagmanager.com/gtag/js?id=UA-387204-13"
+    ></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag() {
+        dataLayer.push(arguments);
+      }
+      gtag("js", new Date());
+      gtag("config", "UA-387204-13");
+    </script>
+  </head>
+
+  <body>
+    <noscript>
+      You need to enable JavaScript to run this app.
+    </noscript>
+    <div id="root"></div>
+    <!--
       This HTML file is a template.
       If you open it directly in the browser, you will see an empty page.
 
@@ -39,6 +60,5 @@
       To begin the development, run `npm start` or `yarn start`.
       To create a production bundle, use `npm run build` or `yarn build`.
     -->
-</body>
-
-</html>
\ No newline at end of file
+  </body>
+</html>
