🌐 What is HTML Preview?
HTML Preview is a tool that renders HTML, CSS, and JavaScript code in real-time as you type. Without saving files or refreshing your browser, you can instantly see your code changes, making it ideal for web prototyping, educational purposes, and testing code snippets. Test responsive designs with mobile (375px), tablet (768px), and desktop (1024px) viewport presets.
📋 Supported Features
Real-time Rendering
Preview updates instantly as you type
Responsive Testing
Switch between mobile/tablet/desktop sizes
Split View
View code and preview side by side
JS Execution
Run JavaScript code in the preview
💡 Usage Tips
- Write HTML, CSS, and JS in a single file to quickly test ideas
- Check layout across different screen sizes before applying media queries
- Preview code snippets before embedding in blogs or documentation
- Debug CSS animations and transitions in real-time
- Load external CDN libraries via <script> tags for testing
Frequently Asked Questions
Is my code saved anywhere?▼
Code is only kept in browser memory and is not saved. Copy important code manually to preserve it.
How do I check JavaScript errors?▼
Open your browser developer tools (F12) and check the Console tab for error messages. You can also use alert() for simple debugging.
Can I use external images or fonts?▼
Yes, any external resource with a URL can be used. However, some resources may be restricted due to CORS policies.
What is HTML Preview?
Write HTML, CSS, and JavaScript code and see the results instantly. Perfect for web page prototyping, code snippet testing, and learning web development. Test responsive designs with mobile, tablet, and desktop previews.