diff --git a/index.html b/index.html
index f236138..79265d9 100644
--- a/index.html
+++ b/index.html
@@ -4,7 +4,28 @@
     <meta charset="UTF-8" />
     <link rel="icon" type="image/svg+xml" href="/logo.png" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <meta name="description" content="Etherpad Scanner" />
+    <meta name="description" content="Etherpad Scanner provides version, plugin, and health checks for public Etherpad instances." />
+    <meta name="robots" content="index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1" />
+    <meta name="theme-color" content="#00E1FF" />
+    <link rel="canonical" href="https://scanner.etherpad.org/" />
+
+    <meta property="og:type" content="website" />
+    <meta property="og:site_name" content="Etherpad Scanner" />
+    <meta property="og:title" content="Etherpad Scanner" />
+    <meta property="og:description" content="Scan and inspect Etherpad instances, including version, plugin updates, and instance health." />
+    <meta property="og:url" content="https://scanner.etherpad.org/" />
+    <meta property="og:image" content="https://scanner.etherpad.org/logo.png" />
+
+    <script type="application/ld+json">
+      {
+        "@context": "https://schema.org",
+        "@type": "WebSite",
+        "name": "Etherpad Scanner",
+        "url": "https://scanner.etherpad.org/",
+        "description": "Etherpad Scanner provides version, plugin, and health checks for Etherpad instances."
+      }
+    </script>
+
     <title>Etherpad Scanner</title>
     <script>
       (function () {