Code Playground
Write HTML, CSS, and JavaScript with live preview.
How it works
- 1
Write your code
Use the HTML, CSS, and JS tabs to write your code with syntax highlighting.
- 2
See live preview
The preview panel updates automatically as you type.
- 3
Download or share
Download your creation as a standalone HTML file.
Common use cases
Interactive button
HTML button + JS click handler
CSS animation
HTML element + CSS keyframes
About This Tool
A split-pane code editor with live preview. Write HTML, CSS, and JavaScript in separate tabs with syntax highlighting and see results instantly. Includes a console panel for debugging, preset templates to get started quickly, and the ability to download your creation as a standalone HTML file. Your code is saved automatically.
More examples
Examples
Interactive button
Input
HTML button + JS click handler
Output
Button that shows an alert on click, visible in the preview pane
CSS animation
Input
HTML element + CSS keyframes
Output
Animated element rendering live in the preview
Frequently Asked Questions
- Is the preview safe?
- Yes. The preview runs in a sandboxed iframe with limited permissions. Your code cannot access the parent page or make network requests.
- Does my code get saved?
- Yes. Your code is automatically saved to localStorage so it persists across browser sessions.
- Can I use external libraries?
- You can include external scripts via <script> tags in the HTML tab, as long as they load from a CDN.
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