Can I test JavaScript inside the HTML viewer?

Yes. You can include tags to test interactive DOM manipulations and animations inside a safe, sandboxed iframe environment.

Is my HTML code uploaded or stored on any server?

No. All editing and rendering is executed client-side in your browser. Your code remains private and is never logged.

Can I format messy or minified HTML code?

Yes. Click the 'Beautify' button to automatically format and indent unorganized HTML markup.

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Developer Tools

Online HTML Viewer

Edit and render HTML safely in-browser with live preview.

Instant Results100% Client-Side Privacy100% Free Utility

Online HTML Viewer & AI Studio

Live split-screen HTML & CSS viewer, 1-click AI component generator, device preview simulator, and automated code formatting.

AI Component Generator

Quick templates:

64 lines · 1779 chars

Source HTML <code>UTF-8

<!DOCTYPE html>
<html>
<head>
  <style>
    body {
      font-family: system-ui, -apple-system, sans-serif;
      margin: 0;
      padding: 30px;
      background: linear-gradient(135deg, #0f0f23 0%, #171738 100%);
      color: #ffffff;
      min-height: 100vh;
      box-sizing: border-box;
    }
    .card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(10px);
      border-radius: 20px;
      padding: 24px;
      max-width: 480px;
      margin: 0 auto;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    }
    .badge {
      display: inline-block;
      background: rgba(139, 92, 246, 0.2);
      color: #a78bfa;
      border: 1px solid rgba(139, 92, 246, 0.3);
      padding: 4px 12px;
      border-radius: 9999px;
      font-size: 12px;
      font-weight: 600;
      margin-bottom: 12px;
    }
    h2 { margin: 0 0 8px 0; font-size: 24px; font-weight: 800; }
    p { color: #94a3b8; font-size: 14px; line-height: 1.6; margin: 0 0 20px 0; }
    .btn {
      display: block;
      width: 100%;
      text-align: center;
      background: linear-gradient(135deg, #8b5cf6, #6366f1);
      color: #ffffff;
      padding: 12px 20px;
      border-radius: 12px;
      text-decoration: none;
      font-weight: 600;
      font-size: 14px;
      border: none;
      cursor: pointer;
      box-sizing: border-box;
      transition: transform 0.2s;
    }
    .btn:hover { transform: translateY(-2px); }
  </style>
</head>
<body>
  <div class="card">
    <span class="badge">🚀 Modern UI</span>
    <h2>Glassmorphic Card</h2>
    <p>Real-time HTML & CSS rendering. Edit code on the left to see live preview update instantly.</p>
    <button class="btn">Explore Smart Tools</button>
  </div>
</body>
</html>

Live Sandboxed Render100% Fluid

Safe sandboxed iframe execution with real-time responsive DOM rendering.

About Online HTML Viewer

An interactive, real-time HTML/CSS/JavaScript editor and code viewer. Write or paste markup with live instant rendering, syntax highlighting, error checking, and code formatting.

Why Choose Our HTML Viewer

Feature	Smart Toolverse	Others
Live Split-Screen	Real-time side-by-side editor and rendered DOM preview	Requires clicking a Run button
Sandbox Security	Isolated sandboxed iframe preventing script hijacking	Unsafe script execution
Beautify & Format	Built-in HTML/CSS code formatter and syntax highlighter	Plain unformatted textarea
Code Privacy	All code executes inside local browser memory	Saves code snippets to public databases

Common Uses & Applications

Test HTML email templates, experiment with CSS styles and Flexbox/Grid layouts, inspect raw webpage markup, and learn front-end web development with instant visual feedback.

Frequently Asked Questions

Yes. The preview pane updates instantly with every keystroke, allowing you to test HTML elements, inline CSS styles, and responsive behaviors live.

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Feature

Smart Toolverse

Others

Live Split-Screen

Real-time side-by-side editor and rendered DOM preview

Requires clicking a Run button

Sandbox Security

Isolated sandboxed iframe preventing script hijacking

Unsafe script execution

Beautify & Format

Built-in HTML/CSS code formatter and syntax highlighter

Plain unformatted textarea

Code Privacy

All code executes inside local browser memory

Saves code snippets to public databases

Online HTML Viewer

Online HTML Viewer & AI Studio

About Online HTML Viewer

Why Choose Our HTML Viewer

Common Uses & Applications

Frequently Asked Questions

Related Searches & Topics

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Online HTML Viewer

Online HTML Viewer & AI Studio

About Online HTML Viewer

Why Choose Our HTML Viewer

Common Uses & Applications

Frequently Asked Questions

Related Searches & Topics

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