HTML Preview

Paste HTML or load a file. See it rendered live in a sandboxed iframe. Supports inline CSS and JavaScript.

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Basic Page</title>
  <style>
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: system-ui, -apple-system, sans-serif;
      background: #0d1117;
      color: #c9d1d9;
      padding: 2rem;
      line-height: 1.6;
    }
    h1 { color: #58a6ff; margin-bottom: 1rem; }
    p { margin-bottom: 0.75rem; }
    a { color: #58a6ff; }
    code {
      background: #161b22;
      padding: 2px 6px;
      border-radius: 4px;
      font-size: 0.9em;
      font-family: 'Fira Mono', monospace;
    }
    .card {
      background: #161b22;
      border: 1px solid #30363d;
      border-radius: 8px;
      padding: 1.5rem;
      margin-top: 1rem;
    }
  </style>
</head>
<body>
  <h1>Hello, World!</h1>
  <p>
    This is a basic HTML page with dark styling.
    Edit the source on the left to see changes <code>live</code>.
  </p>

<div class="card">
    <h2 style="color:#58a6ff; margin-bottom:0.5rem;">Card Component</h2>
    <p>Style anything you want. No build step required.</p>
  </div>
</body>
</html>

Runs entirely in your browser. The preview is sandboxed — no network requests leak out. Load any .html file or paste directly.