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  <title>srcset — x descriptors</title>

  <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}img{width:200px;height:auto;border:1px solid #cbd5e1;border-radius:6px;display:block}.hint{margin-top:1rem;font-size:.8125rem;color:#64748b;max-width:520px}code{background:#e2e8f0;padding:.1rem .35rem;border-radius:4px}</style>

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  <h1>srcset with 1x and 2x</h1>

  <img src="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='80'%3E%3Crect fill='%23dbeafe' width='200' height='80'/%3E%3Ctext x='100' y='48' text-anchor='middle' fill='%231e40af' font-family='system-ui' font-size='12'%3E1x%3C/text%3E%3C/svg%3E" alt="Logo at standard and high density" srcset="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='80'%3E%3Crect fill='%23dbeafe' width='200' height='80'/%3E%3Ctext x='100' y='48' text-anchor='middle' fill='%231e40af' font-family='system-ui' font-size='12'%3E1x%3C/text%3E%3C/svg%3E, data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='160'%3E%3Crect fill='%2393c5fd' width='400' height='160'/%3E%3Ctext x='200' y='92' text-anchor='middle' fill='%231e40af' font-family='system-ui' font-size='22'%3E2x%3C/text%3E%3C/svg%3E 2x" width=200 height=80>

  <p class=hint><code>x</code> descriptors pick by device pixel ratio. No <code>sizes</code> needed when all candidates share the same display size.</p>

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HTML srcset Attribute — Pixel Density (x Descriptors)