diff --git a/frontend/index.html b/frontend/index.html
index 4691b7e..c8530db 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -4,7 +4,30 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <link rel="icon" type="image/x-icon" href="/favicon.ico" />
-    <title>marathon.todo</title>
+
+    <title>marathon.todo | Marathon Item Tracker</title>
+    <meta
+      name="description"
+      content="Track Marathon items and faction upgrades with a fast, shareable to-do list."
+    />
+    <meta name="robots" content="index,follow,max-image-preview:large" />
+    <link rel="canonical" href="https://your-domain.example/" />
+
+    <meta property="og:type" content="website" />
+    <meta property="og:title" content="marathon.todo | Marathon Item Tracker" />
+    <meta
+      property="og:description"
+      content="Track Marathon items and faction upgrades with a fast, shareable to-do list."
+    />
+    <meta property="og:url" content="https://your-domain.example/" />
+    <meta property="og:site_name" content="marathon.todo" />
+
+    <meta name="twitter:card" content="summary" />
+    <meta name="twitter:title" content="marathon.todo | Marathon Item Tracker" />
+    <meta
+      name="twitter:description"
+      content="Track Marathon items and faction upgrades with a fast, shareable to-do list."
+    />
   </head>
   <body>
     <div id="root"></div>
diff --git a/frontend/public/robots.txt b/frontend/public/robots.txt
new file mode 100644
index 0000000..86d8a93
--- /dev/null
+++ b/frontend/public/robots.txt
@@ -0,0 +1,4 @@
+User-agent: *
+Allow: /
+
+Sitemap: https://marathon-todo.xyz/sitemap.xml
diff --git a/frontend/public/sitemap.xml b/frontend/public/sitemap.xml
new file mode 100644
index 0000000..43182dc
--- /dev/null
+++ b/frontend/public/sitemap.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  <url>
+    <loc>https://your-domain.example/</loc>
+    <changefreq>daily</changefreq>
+    <priority>1.0</priority>
+  </url>
+</urlset>
