diff --git a/docs/checker.html b/docs/checker.html
index ab81c65..645e26d 100644
--- a/docs/checker.html
+++ b/docs/checker.html
@@ -45,11 +45,20 @@ <h2>結果表示</h2>
         <footer>
             <h2>ブラウザ対応状況</h2>
             <ul>
-                <li><span class="fab fa-safari"> Safari</span> <span class="fa fa-dizzy">未対応</span></li>
-                <li><span class="fab fa-chrome"> Google Chrome</span> <span class="fa fa-grin">対応済み</span></li>
-                <li><span class="fab fa-firefox"> Firefox</span> <span class="fa fa-grin-tongue">おそらく対応済み</span></li>
-                <li><span class="fab fa-edge"> Edge</span> <span class="fa fa-grin-tongue">おそらく対応済み</span></li>
+                <li><span class="fab fa-safari"> Safari</span>��� 未対応</li>
+                <li><span class="fab fa-chrome"> Google Chrome</span>��� 対応済み</li>
+                <li><span class="fab fa-firefox"> Firefox</span>������ 未検証</li>
+                <li><span class="fab fa-edge"> Edge</span>������ 未検証</li>
             </ul>
         </footer>
     </body>
+    <!-- Global site tag (gtag.js) - Google Analytics -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=UA-62401730-11"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+
+      gtag('config', 'UA-62401730-11');
+    </script>
 </html>
diff --git a/docs/index.html b/docs/index.html
index f864ded..a32af60 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -29,4 +29,14 @@ <h1>ttt: コース修了確認プログラム</h1>
             </p>
         </section>
     </body>
+    <!-- Global site tag (gtag.js) - Google Analytics -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=UA-62401730-11"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+
+      gtag('config', 'UA-62401730-11');
+    </script>
 </html>
+