👁️ HTML Online Viewer
Preview HTML code online - Free HTML viewer and tester
What is an HTML Online Viewer?
An HTML online viewer is a web-based tool that allows you to preview and test HTML code directly in your browser without creating files or setting up a development environment. It's perfect for quickly testing HTML snippets, learning HTML, or debugging code.
Our free HTML viewer provides instant live preview, making it easy to see how your HTML code renders in real-time.
How to Use the HTML Viewer
- Enter HTML: Type or paste your HTML code in the text area
- Preview: Click "Preview HTML" to see the live rendering
- Edit: Make changes to your code and preview again
- Test: Experiment with different HTML elements and attributes
- Learn: Use the sample code to learn HTML basics
HTML Viewer Use Cases
Example 1: Learning HTML
Student learning HTML wants to test basic tags.
- Code: <h1>Hello World</h1><p>My first paragraph</p>
- Preview: Instantly see formatted heading and paragraph
- Result: Quick feedback helps understand HTML structure
Example 2: Testing Email Templates
Developer testing HTML email template.
- Code: Email HTML with tables and inline styles
- Preview: See how email renders before sending
- Result: Catch layout issues early
Example 3: Debugging HTML
Web designer troubleshooting layout issue.
- Code: Complex HTML with nested divs
- Preview: Identify which element causes problem
- Result: Quick isolation of bug
HTML Viewer Technical Features
Supported HTML Elements
- Text: h1-h6, p, span, div, strong, em, etc.
- Lists: ul, ol, li, dl, dt, dd
- Tables: table, tr, td, th, thead, tbody
- Forms: form, input, textarea, select, button
- Media: img, video, audio, iframe
- Semantic: header, nav, main, article, section, footer
CSS Support
- Inline Styles: style attribute on elements
- Style Tags: <style> tags in HTML
- External CSS: Link to external stylesheets
JavaScript Support
- Inline Scripts: <script> tags work in preview
- Event Handlers: onclick, onload, etc.
- External Scripts: Link to external JavaScript files
Frequently Asked Questions
Q: Is this HTML viewer free?
A: Yes! Our HTML online viewer is completely free with no limits on usage or code length.
Q: Can I use CSS in the HTML viewer?
A: Yes! You can use inline styles, <style> tags, or link to external CSS files.
Q: Does JavaScript work in the preview?
A: Yes, JavaScript code in <script> tags will execute in the preview iframe.
Q: Can I save my HTML code?
A: The code stays in your browser session. Copy your code to save it externally.
Q: Is my HTML code private?
A: Yes! All preview happens in your browser. Your code is never sent to our servers.
Q: Can I preview responsive designs?
A: Yes, the preview frame renders your HTML. Use media queries in your CSS for responsive testing.
Q: What's the code length limit?
A: There's no hard limit, but very large HTML files may slow down the preview.
Q: Can I use external resources?
A: Yes, you can link to external CSS, JavaScript, images, and other resources via URLs.
Q: Does this work offline?
A: Once the page loads, the HTML viewer works offline. External resources require internet.
Q: Can I test HTML5 features?
A: Yes! All modern HTML5 elements and features are supported in the preview.
Q: How do I view the source code?
A: The left panel shows your HTML code. The right panel shows the rendered preview.
Q: Can I use this for production websites?
A: This is a testing tool. For production, use proper development environments and hosting.