diff --git a/public/index.html b/public/index.html
index 9b11af7..f1e3762 100644
--- a/public/index.html
+++ b/public/index.html
@@ -7,11 +7,14 @@
 <meta name="description" content="Crystal Alto Vicentino s.r.l. - Gestioni Immobiliari. Amministrazione condominiale e gestione patrimoni immobiliari nell'Alto Vicentino.">
 <meta name="copyright" content="cod3.it">
 <meta name="author" content="Alberto Strazzabosco">
+<meta name="version" content="0.0.1">
 <link rel="canonical" href="https://crystalsrl.com/">
 <meta property="og:title" content="Crystal Alto Vicentino s.r.l. | Gestioni Immobiliari">
 <meta property="og:description" content="Amministrazione condominiale e gestione patrimoni immobiliari nell'Alto Vicentino.">
 <meta property="og:type" content="website">
 <meta property="og:url" content="https://crystalsrl.com/">
+<meta property="og:image" content="https://crystalsrl-com.web.app/og-image.png">
+<meta name="twitter:card" content="summary_large_image">
 <title>Crystal Alto Vicentino s.r.l. | Gestioni Immobiliari</title>
 <link rel="icon" href="/favicon.svg" type="image/svg+xml">
 <link rel="preconnect" href="https://fonts.googleapis.com">
@@ -668,7 +671,7 @@ a.card.clickable:hover { color: inherit; }
 
     <!-- Footer -->
     <div class="footer">
-      <p>© 2026 Crystal Alto Vicentino s.r.l. · P.IVA: 04615870245 · Via del Costo 10, 36010 Zanè (VI)</p>
+      <p>© 2026 Crystal Alto Vicentino s.r.l. · P.IVA: 04615870245 · Via del Costo 10, 36010 Zanè (VI) · <span id="versionDisplay"></span></p>
     </div>
 
   </div>
@@ -711,7 +714,13 @@ function updateFloor() {
   buttons.forEach(btn => btn.classList.toggle('active', btn.dataset.floor === floor));
 }
 window.addEventListener('scroll', updateFloor, { passive: true });
-updateFloor();
+
+// Inizializzazione
+window.addEventListener('DOMContentLoaded', () => {
+  const version = document.querySelector('meta[name="version"]')?.content;
+  if (version) document.getElementById('versionDisplay').textContent = `v${version}`;
+  updateFloor();
+});
 </script>
 
 </body>
diff --git a/public/og-image.png.jpg b/public/og-image.png.jpg
new file mode 100644
index 0000000..5502844
Binary files /dev/null and b/public/og-image.png.jpg differ