diff --git a/docs/misc/test.html b/docs/misc/test.html
new file mode 100644
index 0000000..182306a
--- /dev/null
+++ b/docs/misc/test.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <script type="module" src="test.js"></script>
+  <title>test</title>
+</head>
+
+<body>
+  <h1>This is test.html on GitHub Pages.</h1>
+
+  <p>
+    <button id="button1">[Button] Open yattee://watch?v=lrVT5VFfi5w</button>
+  </p>
+
+  <p>
+    <a href="yattee://watch?v=lrVT5VFfi5w">[Link] Open yattee://watch?v=lrVT5VFfi5w</a>
+  </p>
+</body>
+
+</html>
diff --git a/docs/misc/test.js b/docs/misc/test.js
new file mode 100644
index 0000000..2ceec50
--- /dev/null
+++ b/docs/misc/test.js
@@ -0,0 +1,4 @@
+document.getElementById('button1').addEventListener('click', function () {
+  const deepLinkURL = "yattee://watch?v=lrVT5VFfi5w";
+  window.open(deepLinkURL, '_self');
+});
