Free HTML Preview Tool & Live Code Editor

Test and preview your HTML, CSS, and JavaScript code in real-time with our free online code editor. No sign-up required. Perfect for developers, students, and designers.

How it Works?

Write or paste your code in the editor on the left.
Use the HTML, CSS, and JS tabs to separate your code.
See your results instantly update in the live preview on the right.

HTML Preview Tool

Code Editor

<!DOCTYPE html>
<html>
<head>
    <title>My Project</title>
    <style>
        html, body {
            background: white !important;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: Arial, sans-serif;
            padding: 40px;
            color: #333;
            text-align: center;
        }
        h2 {
            margin: 0 0 20px 0;
            font-size: 2.5rem;
            color: #2c3e50;
        }
        p {
            font-size: 1.2rem;
            margin-bottom: 25px;
            color: #666;
            line-height: 1.6;
        }
        .highlight {
            color: #3498db;
            font-weight: bold;
        }
    </style>
</head>
<body>
    <h2>🚀 Start Building!</h2>
    <p>Update your HTML code in the <span class="highlight">left column</span> to see changes here.</p>
    <p><small>Both panels are now scrollable - try scrolling in the preview!</small></p>
</body>
</html>

console.log('JavaScript is working!');

function greetUser() {
    const name = prompt('What is your name?');
    if (name) {
        alert('Hello, ' + name + '!');
    }
}

// Example redirect functions that should work
function redirectToGoogle() {
    window.top.location.href = 'https://www.google.com';
}

function openGoogleNewWindow() {
    window.open('https://www.google.com', '_blank');
}

Live Preview

Frequently Asked Questions

Is this HTML previewer completely free to use?

Yes, our HTML preview tool is 100% free to use with no limitations or sign-up required.

Can I test CSS and JavaScript in this editor?

Absolutely! Our online editor supports HTML, CSS, and JavaScript. You can use the dedicated tabs to write your code and see it all come together in the live preview.

What is an HTML sandbox?

An HTML sandbox (or playground) is a development environment that allows you to write and test code in isolation, without affecting any other files. It’s perfect for experimenting and quick tests.

How do I run the code?

Our editor provides a real-time preview, so changes appear automatically. You can also press the “Run” button to refresh the preview pane with your latest code.

Is this HTML previewer completely free to use?

Yes, our HTML preview tool is 100% free to use with no limitations or sign-up required.