diff --git a/.vscode/settings.json b/.vscode/settings.json
index 375484c..afc19d4 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -7,5 +7,9 @@
   },
   "[typescript]": {
     "editor.tabSize": 2
+  },
+  "[json]": {
+    "editor.tabSize": 2,
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
   }
 }
diff --git a/routes/index.tsx b/routes/index.tsx
index 52ee2a5..6313b81 100644
--- a/routes/index.tsx
+++ b/routes/index.tsx
@@ -11,6 +11,11 @@ export default function JoinPage() {
           name="description"
           content="LiberChat : 更新不要なリアルタイムチャットを最高峰のUI/UXで、Liberlunaが提供します。"
         />
+        
+        <link rel="manifest" href="manifest.json" />
+        <link rel="manifest" href="manifest.webmanifest" />
+        <script async src="https://cdn.jsdelivr.net/npm/pwacompat" crossorigin="anonymous"></script>
+
       </Head>
       <Layout>
         <div className="mx-auto text-center">
diff --git a/static/icon/.gitkeep b/static/icon/.gitkeep
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/static/icon/.gitkeep
@@ -0,0 +1 @@
+
diff --git a/static/icon/192x192.png b/static/icon/192x192.png
new file mode 100644
index 0000000..27ccc08
Binary files /dev/null and b/static/icon/192x192.png differ
diff --git a/static/manifest.json b/static/manifest.json
new file mode 100644
index 0000000..e13c6e3
--- /dev/null
+++ b/static/manifest.json
@@ -0,0 +1,14 @@
+{
+    "short_name": "LiberChat",
+    "name": "LiberChat",
+    "display": "standalone",
+    "start_url": "index.html",
+    "icons": [
+      {
+        "src": "icon/192x192.png",
+        "sizes": "192x192",
+        "type": "image/png"
+      }
+    ]
+  }
+  
\ No newline at end of file