diff --git a/index.html b/index.html
index 5ecbd98..941ae98 100644
--- a/index.html
+++ b/index.html
@@ -15,7 +15,43 @@
             name="viewport"
             content="width=device-width, initial-scale=1.0, viewport-fit=cover"
         />
-        <title>Grateful Journal</title>
+
+        <!-- SEO -->
+        <title>Grateful Journal — Your Private Gratitude Journal</title>
+        <meta name="description" content="A private, end-to-end encrypted gratitude journal. No feeds, no noise — just you and your thoughts. Grow your gratitude one moment at a time." />
+        <meta name="keywords" content="gratitude journal, private journal, encrypted journal, daily gratitude, mindfulness, reflection" />
+        <link rel="canonical" href="https://gratefuljournal.online/" />
+
+        <!-- Open Graph (WhatsApp, Facebook, LinkedIn previews) -->
+        <meta property="og:type" content="website" />
+        <meta property="og:url" content="https://gratefuljournal.online/" />
+        <meta property="og:title" content="Grateful Journal — Your Private Gratitude Journal" />
+        <meta property="og:description" content="A private, end-to-end encrypted gratitude journal. No feeds, no noise — just you and your thoughts." />
+        <meta property="og:image" content="https://gratefuljournal.online/web-app-manifest-512x512.png" />
+
+        <!-- Twitter Card -->
+        <meta name="twitter:card" content="summary_large_image" />
+        <meta name="twitter:title" content="Grateful Journal — Your Private Gratitude Journal" />
+        <meta name="twitter:description" content="A private, end-to-end encrypted gratitude journal. No feeds, no noise — just you and your thoughts." />
+        <meta name="twitter:image" content="https://gratefuljournal.online/web-app-manifest-512x512.png" />
+
+        <!-- JSON-LD Structured Data -->
+        <script type="application/ld+json">
+        {
+          "@context": "https://schema.org",
+          "@type": "WebApplication",
+          "name": "Grateful Journal",
+          "url": "https://gratefuljournal.online/",
+          "description": "A private, end-to-end encrypted gratitude journal. No feeds, no noise — just you and your thoughts.",
+          "applicationCategory": "LifestyleApplication",
+          "operatingSystem": "Web, Android, iOS",
+          "offers": {
+            "@type": "Offer",
+            "price": "0",
+            "priceCurrency": "USD"
+          }
+        }
+        </script>
     </head>
     <body>
         <div id="root"></div>
diff --git a/public/robots.txt b/public/robots.txt
new file mode 100644
index 0000000..e1bed4f
--- /dev/null
+++ b/public/robots.txt
@@ -0,0 +1,7 @@
+User-agent: *
+Allow: /
+Disallow: /
+
+User-agent: Googlebot
+Allow: /login
+Disallow: /
diff --git a/public/sitemap.xml b/public/sitemap.xml
new file mode 100644
index 0000000..bef057f
--- /dev/null
+++ b/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://gratefuljournal.online/login</loc>
+    <changefreq>monthly</changefreq>
+    <priority>1.0</priority>
+  </url>
+</urlset>
