HTML editor

Edit HTML with a live preview panel.

Everything happens locally in your browser. Nothing is uploaded.

Controls

Upload, download, format, and manage your HTML content

Quick Templates

Start with a template or insert snippets

HTML Editor & Preview

Choose your preferred view mode

HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>My HTML Document</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 20px;
            background-color: #f4f4f4;
        }
        .container {
            max-width: 800px;
            margin: 0 auto;
            background: white;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 0 10px rgba(0,0,0,0.1);
        }
        h1 {
            color: #333;
            text-align: center;
        }
        .highlight {
            background-color: #ffeb3b;
            padding: 2px 4px;
        }
        .button {
            background-color: #007bff;
            color: white;
            padding: 10px 20px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            text-decoration: none;
            display: inline-block;
            margin: 5px;
        }
        .button:hover {
            background-color: #0056b3;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>Welcome to HTML Editor</h1>
        <p>This is a <strong>live HTML editor</strong> with real-time preview.</p>
        
        <h2>Features</h2>
        <ul>
            <li>Real-time HTML preview</li>
            <li>Download as .html file</li>
            <li>Copy HTML code to clipboard</li>
            <li>Upload existing .html files</li>
            <li>Split view editing</li>
        </ul>
        
        <h2>HTML Elements</h2>
        <p>Here are some <span class="highlight">highlighted text</span> and a <a href="#" class="button">Sample Button</a></p>
        
        <h3>Table Example</h3>
        <table border="1" style="border-collapse: collapse; width: 100%;">
            <tr style="background-color: #f2f2f2;">
                <th style="padding: 8px;">Name</th>
                <th style="padding: 8px;">Age</th>
                <th style="padding: 8px;">City</th>
            </tr>
            <tr>
                <td style="padding: 8px;">John Doe</td>
                <td style="padding: 8px;">30</td>
                <td style="padding: 8px;">New York</td>
            </tr>
            <tr>
                <td style="padding: 8px;">Jane Smith</td>
                <td style="padding: 8px;">25</td>
                <td style="padding: 8px;">Los Angeles</td>
            </tr>
        </table>
        
        <h3>Form Example</h3>
        <form>
            <label for="name">Name:</label><br>
            <input type="text" id="name" name="name" style="padding: 5px; margin: 5px 0; width: 200px;"><br>
            
            <label for="email">Email:</label><br>
            <input type="email" id="email" name="email" style="padding: 5px; margin: 5px 0; width: 200px;"><br>
            
            <button type="submit" class="button">Submit</button>
        </form>
        
        <script>
            // JavaScript example
            document.addEventListener('DOMContentLoaded', function() {
                console.log('HTML Editor loaded!');
                
                // Add click handler to buttons
                const buttons = document.querySelectorAll('.button');
                buttons.forEach(button => {
                    button.addEventListener('click', function(e) {
                        e.preventDefault();
                        alert('Button clicked!');
                    });
                });
            });
        </script>
    </div>
</body>
</html>

Live Preview

Pro tip: This HTML editor supports real-time preview with JavaScript execution. Use the Format button to clean up your code, or Minify to compress it for production!

A practical guide to HTML editor

HTML Editor provides source editing and a live rendered preview for markup and styles. It is useful for small documents and experiments, but preview security and browser behavior must be considered.

Example: prototype an email content block

Write semantic HTML, use conservative inline styling, inspect the preview, and still test in the actual email clients before sending.

Task-specific steps

1
Enter a small, trusted HTML document and separate structure, styling, and external dependencies clearly.
2
Watch the preview while checking semantics, responsive width, overflow, contrast, links, and missing assets.
3
Copy the final source and test it in the real browser, email client, or publishing environment that will consume it.

Options that affect the result

Source and preview panes make markup changes visible immediately.
HTML and CSS provide more layout control than Markdown but require more compatibility and security care.

Limitations to know first

A preview cannot reproduce every content-security policy, email client, browser version, or production stylesheet.
Untrusted scripts and remote resources can create security or privacy risks and should not be pasted casually.

Questions specific to this task

Can the HTML preview test email compatibility?

No single browser preview matches Outlook, Gmail, Apple Mail, and mobile clients. Use an email-specific test service or real clients.

Why is an external image missing?

The URL may be blocked, private, mixed-content, cross-origin restricted, or unavailable. Use a valid accessible source.