HTML Viewer

Type or paste HTML on the left and see a live preview on the right.

HTML input

Scripts run inside a sandboxed iframe so they cannot access the main page context.

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <title>Live Preview</title>
  <style>
    :root {
      color-scheme: light;
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }
    body {
      margin: 0;
      padding: 2.5rem;
      line-height: 1.6;
      background: radial-gradient(circle at top, #f8fafc, #eef2ff 55%, #e0f2fe 100%);
      color: #1f2937;
    }
    h1 {
      color: #2563eb;
      font-size: clamp(2rem, 5vw, 3rem);
      margin-bottom: 1rem;
    }
    .card {
      background: white;
      border-radius: 1rem;
      border: 1px solid rgba(37, 99, 235, 0.15);
      box-shadow: 0 25px 45px -20px rgba(37, 99, 235, 0.45);
      padding: 2rem;
      max-width: 560px;
    }
    .note {
      border-left: 4px solid #f59e0b;
      padding-left: 1rem;
      margin-top: 1.5rem;
      font-size: 0.95rem;
      background: linear-gradient(90deg, rgba(245, 158, 11, 0.08), transparent);
    }
    a {
      color: #0ea5e9;
    }
    code {
      background: rgba(148, 163, 184, 0.15);
      padding: 0.15rem 0.35rem;
      border-radius: 0.35rem;
      font-family: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
    }
    @media (prefers-color-scheme: dark) {
      :root {
        color-scheme: dark;
        background: #020617;
        color: #e2e8f0;
      }
      body {
        background: radial-gradient(circle at top, #0f172a, #1e293b 55%, #0b1120 100%);
        color: #e2e8f0;
      }
      .card {
        background: rgba(15, 23, 42, 0.75);
        border: 1px solid rgba(94, 234, 212, 0.2);
        box-shadow: 0 25px 40px -22px rgba(8, 145, 178, 0.4);
      }
      .note {
        border-left-color: #fcd34d;
        background: linear-gradient(90deg, rgba(252, 211, 77, 0.08), transparent);
      }
      a {
        color: #38bdf8;
      }
      code {
        background: rgba(148, 163, 184, 0.2);
      }
    }
  </style>
</head>
<body>
  <div class="card">
    <h1>Live HTML Preview</h1>
    <p>Edit the markup on the left to see changes here instantly. Styles, scripts, and external assets are supported.</p>
    <div class="note">
      <strong>Tip:</strong> Wrap your components with <code>&lt;main&gt;</code> and use flexbox utilities to preview layouts quickly.
    </div>
  </div>
</body>
</html>

Live previewLive