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<head>

  <meta charset=UTF-8>

  <meta name=viewport content="width=device-width,initial-scale=1">

  <title>scheme — modern replacement</title>

  <meta name=book-isbn content=978-0134685991>

  <script type=application/ld+json>

  {

    "@context": "https://schema.org",

    "@type": "Book",

    "name": "Effective Java",

    "isbn": "978-0134685991",

    "datePublished": "2017-12-17"

  }

  </script>

  <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 1rem;font-size:1.25rem;color:#0f172a}.panel{max-width:520px;padding:.75rem 1rem;background:#fff;border:1px solid #e2e8f0;border-radius:8px;font-size:.8125rem}code{background:#e2e8f0;padding:.1rem .35rem;border-radius:4px}.hint{margin-top:1rem;font-size:.8125rem;color:#64748b;max-width:520px}</style>

</head>

<body>

  <h1>Modern metadata (no scheme)</h1>

  <div class=panel>

    <p style=margin:0>Use <code>name="book-isbn"</code> instead of <code>scheme="ISBN"</code>, plus JSON-LD for rich structured data.</p>

  </div>

  <p class=hint>Search engines prefer JSON-LD over deprecated Dublin Core <code>scheme</code> patterns.</p>

</body>

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HTML scheme Attribute — Modern Metadata Replacement