diff --git a/public/robots.txt b/public/robots.txt
new file mode 100644
index 0000000..82d26b5
--- /dev/null
+++ b/public/robots.txt
@@ -0,0 +1,3 @@
+User-agent: *
+Allow: /
+Sitemap: https://servermanager.devlab.lat/sitemap.xml
diff --git a/public/sitemap.xml b/public/sitemap.xml
new file mode 100644
index 0000000..6fcb731
--- /dev/null
+++ b/public/sitemap.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+  <url>
+    <loc>https://servermanager.devlab.lat/</loc>
+    <changefreq>weekly</changefreq>
+    <priority>1.0</priority>
+  </url>
+  <url>
+    <loc>https://servermanager.devlab.lat/login</loc>
+    <changefreq>monthly</changefreq>
+    <priority>0.3</priority>
+  </url>
+  <url>
+    <loc>https://servermanager.devlab.lat/privacy</loc>
+    <changefreq>monthly</changefreq>
+    <priority>0.5</priority>
+  </url>
+  <url>
+    <loc>https://servermanager.devlab.lat/terms</loc>
+    <changefreq>monthly</changefreq>
+    <priority>0.5</priority>
+  </url>
+</urlset>
diff --git a/src/Controllers/DashboardController.php b/src/Controllers/DashboardController.php
index 08923d6..5cea4b1 100755
--- a/src/Controllers/DashboardController.php
+++ b/src/Controllers/DashboardController.php
@@ -43,6 +43,7 @@ class DashboardController
 
         $this->view->setLayout('auth')->display('pages.landing', [
             'title' => 'ServerManager - Linux Server Management Platform',
+            'description' => 'ServerManager — Free and open-source Linux server management platform. Monitor server metrics, execute commands via web terminal, and receive push notifications on your phone.',
             'stats' => $stats,
         ]);
     }
diff --git a/views/layouts/auth.php b/views/layouts/auth.php
index 9b92c52..b7f26ee 100755
--- a/views/layouts/auth.php
+++ b/views/layouts/auth.php
@@ -4,6 +4,13 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title><?= htmlspecialchars($title ?? 'ServerManager') ?></title>
+    <meta name="description" content="ServerManager — Linux server management platform. Monitor, manage, and control your servers with real-time metrics and web terminal.">
+    <link rel="canonical" href="<?= htmlspecialchars(($_ENV['APP_URL'] ?? 'https://sysadmin.lan') . parse_url($_SERVER['REQUEST_URI'] ?? '/', PHP_URL_PATH)) ?>">
+    <meta property="og:title" content="<?= htmlspecialchars($title ?? 'ServerManager') ?>">
+    <meta property="og:description" content="ServerManager — Linux server management platform.">
+    <meta property="og:type" content="website">
+    <meta property="og:image" content="<?= htmlspecialchars(($_ENV['APP_URL'] ?? 'https://sysadmin.lan') . '/assets/img/icon-512.png') ?>">
+    <meta name="twitter:card" content="summary_large_image">
     <link rel="icon" type="image/svg+xml" href="/assets/img/server.svg">
     <link rel="manifest" href="/manifest.json">
     <meta name="theme-color" content="#0f1117">
diff --git a/views/layouts/main.php b/views/layouts/main.php
index c432c0e..9876857 100755
--- a/views/layouts/main.php
+++ b/views/layouts/main.php
@@ -3,9 +3,11 @@ $notifications = $notifications ?? [];
 $unreadCount = $unreadCount ?? 0;
 $teamId = $teamId ?? null;
 $title = $title ?? 'ServerManager';
+$description = $description ?? 'ServerManager — Linux server management platform. Monitor, manage, and control your servers from anywhere with real-time metrics, web terminal, and push notifications.';
 $content = $content ?? '';
 
 $currentRoute = $_SERVER['REQUEST_URI'] ?? '/';
+$canonicalUrl = ($_ENV['APP_URL'] ?? 'https://sysadmin.lan') . $currentRoute;
 
 if (!isset($user) || $user === null) {
     $user = auth();
@@ -17,8 +19,47 @@ if (!isset($user) || $user === null) {
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title><?= htmlspecialchars($title) ?> — ServerManager</title>
+    <meta name="description" content="<?= htmlspecialchars($description) ?>">
     <meta name="api-token" content="<?= htmlspecialchars($user['api_token'] ?? '') ?>">
     <meta name="csrf-token" content="<?= $this->csrfToken() ?>">
+
+    <!-- Canonical -->
+    <link rel="canonical" href="<?= htmlspecialchars($canonicalUrl) ?>">
+
+    <!-- Open Graph -->
+    <meta property="og:title" content="<?= htmlspecialchars($title) ?> — ServerManager">
+    <meta property="og:description" content="<?= htmlspecialchars($description) ?>">
+    <meta property="og:type" content="website">
+    <meta property="og:url" content="<?= htmlspecialchars($canonicalUrl) ?>">
+    <meta property="og:image" content="<?= htmlspecialchars(($_ENV['APP_URL'] ?? 'https://sysadmin.lan') . '/assets/img/icon-512.png') ?>">
+    <meta property="og:site_name" content="ServerManager">
+    <meta property="og:locale" content="en_US">
+
+    <!-- Twitter Card -->
+    <meta name="twitter:card" content="summary_large_image">
+    <meta name="twitter:title" content="<?= htmlspecialchars($title) ?> — ServerManager">
+    <meta name="twitter:description" content="<?= htmlspecialchars($description) ?>">
+    <meta name="twitter:image" content="<?= htmlspecialchars(($_ENV['APP_URL'] ?? 'https://sysadmin.lan') . '/assets/img/icon-512.png') ?>">
+
+    <!-- JSON-LD Schema -->
+    <script type="application/ld+json">
+    {
+        "@context": "https://schema.org",
+        "@type": "WebApplication",
+        "name": "ServerManager",
+        "url": "<?= htmlspecialchars($_ENV['APP_URL'] ?? 'https://sysadmin.lan') ?>",
+        "description": "Linux server management platform with real-time monitoring, web terminal, and push notifications.",
+        "applicationCategory": "DeveloperApplication",
+        "operatingSystem": "Linux",
+        "browserRequirements": "Requires JavaScript. Supports Chrome, Firefox, Safari, Edge.",
+        "offers": {
+            "@type": "Offer",
+            "price": "0",
+            "priceCurrency": "USD"
+        }
+    }
+    </script>
+
     <link rel="stylesheet" href="/assets/css/style.css?v=<?= asset_version() ?>">
     <link rel="icon" type="image/svg+xml" href="/assets/img/server.svg">
     <link rel="manifest" href="/manifest.json">