diff --git a/web/viewer.html b/web/viewer.html
index e1c192312ba872..9abaabeb0ff32b 100644
--- a/web/viewer.html
+++ b/web/viewer.html
@@ -52,6 +52,18 @@
 <!--#elif /* Development mode. */-->
     <link rel="resource" type="application/l10n" href="locale/locale.json">
 
+    <script
+      src="https://js.sentry-cdn.com/e214bf98fc5b536dea2fa999bcc2670e.min.js"
+      crossorigin="anonymous"
+    ></script>
+    <script>
+      Sentry.onLoad(function() {
+        Sentry.init({
+          tracesSampleRate: 0.1,
+        });
+      });
+    </script>
+
     <script type="importmap">
       {
         "imports": {