diff --git a/src/index.ts b/src/index.ts
index dfa2fc12..774931dd 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -13,11 +13,19 @@ if (!('customElements' in self)) {
 }
 
 if (typeof PRERENDER === 'undefined') {
+  // Determine the current display mode.
+  let displayMode = 'browser';
+  const mqStandAlone = '(display-mode: standalone)';
+  if (navigator.standalone || window.matchMedia(mqStandAlone).matches) {
+    displayMode = 'standalone';
+  }
+  // Setup analytics
   window.ga = window.ga || ((...args) => (ga.q = ga.q || []).push(args));
   ga('create', 'UA-128752250-1', 'auto');
   ga('set', 'transport', 'beacon');
+  ga('set', 'dimension1', displayMode);
   ga('send', 'pageview');
-    // Load the GA script
+  // Load the GA script
   const s = document.createElement('script');
   s.src = 'https://www.google-analytics.com/analytics.js';
   document.head!.appendChild(s);
diff --git a/src/missing-types.d.ts b/src/missing-types.d.ts
index 8d8366ae..9174f20e 100644
--- a/src/missing-types.d.ts
+++ b/src/missing-types.d.ts
@@ -39,3 +39,7 @@ declare var ga: {
   (...args: any[]): void;
   q: any[];
 };
+
+interface Navigator {
+	readonly standalone: boolean;
+}