HTML Code

<!DOCTYPE html>
<html lang=en>
<head>
  <meta charset=UTF-8>
  <meta name=viewport content="width=device-width,initial-scale=1">
  <title>manifest — modern PWA approach</title>
  <link rel=manifest href=manifest.json>
  <style>body{font-family:system-ui,sans-serif;margin:0;padding:1.5rem;background:#f8fafc;color:#334155;line-height:1.7}h1{margin:0 0 .75rem;font-size:1.25rem;color:#0f172a}.ok{max-width:520px;padding:.75rem 1rem;background:#ecfdf5;border:1px solid #6ee7b7;border-radius:8px;font-size:.8125rem;color:#065f46;margin-bottom:1rem}pre{max-width:520px;margin:0;padding:.75rem 1rem;background:#0f172a;color:#e2e8f0;border-radius:8px;font-size:.75rem;overflow-x:auto}.hint{margin-top:1rem;font-size:.8125rem;color:#64748b;max-width:520px}code{background:#e2e8f0;padding:.1rem .35rem;border-radius:4px}</style>
</head>
<body>
  <h1>Modern replacement (not the same attribute)</h1>
  <p class=ok><strong>Today:</strong> Use <code>&lt;link rel="manifest"&gt;</code> for PWA metadata and Service Workers for offline caching.</p>
  <p>In <code>&lt;head&gt;</code>:</p>
  <pre>&lt;link rel="manifest" href="manifest.json"&gt;</pre>
  <p style=margin-top:1rem>Sample <code>manifest.json</code> (Web App Manifest — JSON, not .appcache):</p>
  <pre>{
  "name": "My App",
  "short_name": "App",
  "start_url": "/",
  "display": "standalone",
  "icons": [{ "src": "icon.png", "sizes": "192x192", "type": "image/png" }]
}</pre>
  <p class=hint>This is <strong>not</strong> the deprecated <code>manifest</code> attribute on <code>&lt;html&gt;</code>. Offline files are cached via Service Worker scripts.</p>
</body>
</html>

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HTML manifest Attribute — Modern PWA Replacement