diff --git a/README.md b/README.md
index 0e67130..16b68cf 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,14 @@
 # masonry-angular — workspace
 
+[![npm](https://img.shields.io/npm/v/masonry-angular.svg)](https://www.npmjs.com/package/masonry-angular)
+[![license](https://img.shields.io/npm/l/masonry-angular.svg)](LICENSE)
+
 Angular workspace for the **masonry-angular** library and its example app.
 
+**[npm](https://www.npmjs.com/package/masonry-angular)** ·
+**[GitHub](https://github.com/MeAkib/masonry-angular)** ·
+**[StackBlitz](https://stackblitz.com/github/MeAkib/masonry-angular/tree/main/examples/stackblitz)**
+
 | Project | Path | |
 | --- | --- | --- |
 | `masonry-angular` | `projects/masonry-angular` | The publishable library. |
diff --git a/package.json b/package.json
index e0b22b1..91c5c3c 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,8 @@
     "size:features": "npm run build:lib && node scripts/feature-size.mjs",
     "verify:ssr": "npm run build:lib && node scripts/verify-ssr.mjs",
     "verify:compat": "node scripts/verify-compat.mjs",
-    "verify:docs": "npm run build:lib && node scripts/verify-docs.mjs"
+    "verify:docs": "npm run build:lib && node scripts/verify-docs.mjs",
+    "postbuild": "node scripts/inject-meta.mjs"
   },
   "packageManager": "npm@11.12.1",
   "engines": {
diff --git a/projects/demo/public/og.png b/projects/demo/public/og.png
new file mode 100644
index 0000000..8a90ed2
Binary files /dev/null and b/projects/demo/public/og.png differ
diff --git a/projects/demo/src/app/app.css b/projects/demo/src/app/app.css
index 080607e..f4ecc21 100644
--- a/projects/demo/src/app/app.css
+++ b/projects/demo/src/app/app.css
@@ -49,3 +49,31 @@ nav a.active {
 main {
   padding: 20px 10px;
 }
+
+.masthead .links {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 14px;
+  align-items: center;
+  margin-top: 10px;
+  font-size: 0.85rem;
+}
+
+.masthead .links a {
+  color: var(--accent);
+  text-decoration: none;
+  border-bottom: 1px solid transparent;
+}
+
+.masthead .links a:hover {
+  border-bottom-color: currentcolor;
+}
+
+.masthead .links code {
+  padding: 2px 8px;
+  border: 1px solid var(--line);
+  border-radius: 6px;
+  background: var(--panel);
+  color: var(--muted);
+  font-size: 0.8rem;
+}
diff --git a/projects/demo/src/app/app.html b/projects/demo/src/app/app.html
index ab1cca8..cf0f48a 100644
--- a/projects/demo/src/app/app.html
+++ b/projects/demo/src/app/app.html
@@ -2,6 +2,25 @@
   <div>
     <h1>masonry-angular</h1>
     <p>Zero-dependency masonry for Angular — signal-based, zoneless and SSR-safe.</p>
+
+    <!-- Somebody who likes what they see here needs a way to reach the package
+         and the source without hunting for it. -->
+    <p class="links">
+      <a href="https://www.npmjs.com/package/masonry-angular" target="_blank" rel="noopener">
+        npm
+      </a>
+      <a href="https://github.com/MeAkib/masonry-angular" target="_blank" rel="noopener">
+        GitHub
+      </a>
+      <a
+        href="https://stackblitz.com/github/MeAkib/masonry-angular/tree/main/examples/stackblitz"
+        target="_blank"
+        rel="noopener"
+      >
+        StackBlitz
+      </a>
+      <code>npm i masonry-angular</code>
+    </p>
   </div>
 
   <nav>
diff --git a/projects/demo/src/index.html b/projects/demo/src/index.html
index 1a9bad5..92182bf 100644
--- a/projects/demo/src/index.html
+++ b/projects/demo/src/index.html
@@ -2,10 +2,47 @@
 <html lang="en">
   <head>
     <meta charset="utf-8" />
-    <title>Demo</title>
+    <title>masonry-angular — cascading grid layout for Angular</title>
     <base href="/" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <link rel="icon" type="image/x-icon" href="favicon.ico" />
+
+    <meta
+      name="description"
+      content="Zero-dependency masonry layout for Angular. For photo walls and for dashboards where cards have different heights. 8.6 KB, signal-based, zoneless, SSR-safe, Angular 17.1–22."
+    />
+
+    <!--
+      __SITE_URL__ is replaced at build time by scripts/inject-meta.mjs, which
+      reads Vercel's VERCEL_PROJECT_PRODUCTION_URL. Open Graph requires an
+      absolute URL for og:image — a relative one is silently ignored, which is
+      exactly the failure where a shared link shows no preview at all.
+    -->
+    <meta property="og:type" content="website" />
+    <meta property="og:site_name" content="masonry-angular" />
+    <meta property="og:url" content="__SITE_URL__/" />
+    <meta property="og:title" content="masonry-angular — cascading grid layout for Angular" />
+    <meta
+      property="og:description"
+      content="Zero dependencies, 8.6 KB, Angular 17–22, SSR-safe. For photo walls and for dashboards that stop leaving gaps."
+    />
+    <meta property="og:image" content="__SITE_URL__/og.png" />
+    <meta property="og:image:width" content="1200" />
+    <meta property="og:image:height" content="630" />
+    <meta
+      property="og:image:alt"
+      content="masonry-angular: a cascading grid of coloured cards at different heights."
+    />
+
+    <meta name="twitter:card" content="summary_large_image" />
+    <meta name="twitter:title" content="masonry-angular — cascading grid layout for Angular" />
+    <meta
+      name="twitter:description"
+      content="Zero dependencies, 8.6 KB, Angular 17–22, SSR-safe. For photo walls and for dashboards that stop leaving gaps."
+    />
+    <meta name="twitter:image" content="__SITE_URL__/og.png" />
+
+    <link rel="canonical" href="__SITE_URL__/" />
   </head>
   <body>
     <app-root></app-root>
diff --git a/scripts/inject-meta.mjs b/scripts/inject-meta.mjs
new file mode 100644
index 0000000..3de0a0a
--- /dev/null
+++ b/scripts/inject-meta.mjs
@@ -0,0 +1,51 @@
+/**
+ * Turns the `__SITE_URL__` placeholders in the built `index.html` into the real
+ * deployed origin.
+ *
+ * Open Graph needs an *absolute* URL for `og:image` — a relative one is ignored
+ * without complaint, and the result is a shared link that shows no preview at
+ * all. Since the URL is not known until the site is deployed, the source keeps
+ * a placeholder and this fills it in after the build.
+ *
+ * `VERCEL_PROJECT_PRODUCTION_URL` is the right variable: Vercel documents it as
+ * always set, even on preview deployments, specifically so that OG image URLs
+ * point at production. It carries no scheme, so `https://` is added here.
+ *
+ * npm runs this automatically after `npm run build`.
+ */
+import { readFileSync, writeFileSync, existsSync } from 'node:fs';
+import { dirname, resolve } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const ROOT = resolve(dirname(fileURLToPath(import.meta.url)), '..');
+const INDEX = resolve(ROOT, 'dist/demo/browser/index.html');
+
+/** Only used when building outside Vercel, so local builds still produce valid URLs. */
+const FALLBACK = 'https://masonry-angular.vercel.app';
+
+const domain = process.env['VERCEL_PROJECT_PRODUCTION_URL'];
+const origin = domain ? `https://${domain}` : FALLBACK;
+
+if (!existsSync(INDEX)) {
+  console.error(`inject-meta — no build output at ${INDEX}. Run "npm run build" first.`);
+  process.exit(1);
+}
+
+const before = readFileSync(INDEX, 'utf8');
+const after = before.replaceAll('__SITE_URL__', origin);
+const replaced = before.split('__SITE_URL__').length - 1;
+
+if (replaced === 0) {
+  console.error(
+    'inject-meta — found no __SITE_URL__ placeholders in the built index.html.\n' +
+      '  The social preview tags are probably missing or renamed; a shared link\n' +
+      '  would show no preview card. Check projects/demo/src/index.html.',
+  );
+  process.exit(1);
+}
+
+writeFileSync(INDEX, after);
+console.log(
+  `inject-meta — ${replaced} placeholder(s) -> ${origin}` +
+    (domain ? '' : '  (VERCEL_PROJECT_PRODUCTION_URL unset, used the fallback)'),
+);
