Live Code Playground
What is Live Code Playground?
Live Code Playground is a free online HTML CSS JavaScript editor that displays instant live preview as you type. This browser-based code editor works like CodePen, JSFiddle, and CodeSandbox but requires no account or signup. Web developers use this online code playground to test HTML snippets, experiment with CSS styles, debug JavaScript code, and prototype responsive layouts. The split-pane interface shows your HTML CSS JS code on the left and live output on the right. Built-in features include a JavaScript console for debugging, auto-run mode for instant feedback, and fullscreen mode for distraction-free coding. Whether you are learning frontend development, testing a quick code snippet, or building an interactive demo, this free web development playground runs entirely in your browser with zero setup.
How to Use This Tool
Open the HTML tab and write your webpage structure and markup
Switch to CSS tab to add styles, colors, layouts, and animations
Use the JS tab to add interactivity, event handlers, and DOM manipulation
Watch the live preview panel update instantly as you code
Click the console icon to debug JavaScript and view console.log output
Enable fullscreen for a better online coding experience
Copy your complete HTML CSS JavaScript code with one click
Features
- Free online HTML editor with syntax support
- CSS editor with instant style preview
- JavaScript editor with console output
- Live preview updates as you type code
- Built-in JS console shows logs and errors
- Fullscreen mode for focused web development
- Auto-run toggle for complex JavaScript
- One-click copy all HTML CSS JS code
- Reset to starter template anytime
- No signup, no account, 100% free
Frequently Asked Questions
- What is a live code playground and why use it?
A live code playground is an online code editor for HTML, CSS, and JavaScript that shows instant live preview of your code. Developers use code playgrounds to quickly test code snippets, learn web development, prototype UI components, and share interactive examples without installing any software or setting up a local development environment.
- Is this a free CodePen alternative?
Yes, this is a free CodePen alternative that runs entirely in your browser. Like CodePen, JSFiddle, and JS Bin, you can write HTML, CSS, and JavaScript with live preview. Unlike CodePen, this online code editor requires no account signup and stores nothing on servers - perfect for quick code testing.
- Can I use React, Vue, jQuery or other JavaScript libraries?
Yes, you can use any JavaScript library by adding CDN script tags in your HTML code. For React, add the React and ReactDOM scripts from unpkg or cdnjs. For jQuery, add the jQuery CDN link. For Vue.js, Tailwind CSS, Bootstrap, or any other library, simply include the appropriate CDN script or stylesheet link.
- How do I debug JavaScript errors in the code playground?
Click the terminal/console icon to open the built-in JavaScript console. It displays all console.log() output, JavaScript errors with line numbers, and warnings. This helps you debug code without opening browser developer tools. The console clears automatically when you run new code.
- Can I save my HTML CSS JavaScript code from the playground?
Click the Copy button to copy all your HTML, CSS, and JavaScript code to clipboard. You can then paste it into a local file, GitHub Gist, or any code sharing platform. The playground does not save code to any server, so always copy your work before closing the browser tab.
- Does the code playground work offline?
Once the page loads, the HTML CSS JavaScript editor works offline in your browser. All code execution happens locally using your browser JavaScript engine. No internet connection is needed for the live preview to work. Your code stays private and is never sent to any server.