Write HTML, CSS, and JavaScript in split-pane editors and see the result live in a sandboxed preview. No signup needed. Share your work by copying the URL with encoded content. Perfect for quick prototypes, demos, and experiments.
Create, test, and share web prototypes instantly using this live HTML, CSS, and JavaScript editor.
1
Access the Code Playground editor
Navigate to the Code Playground tool to access the split-pane interface. No account or signup is required to start coding.
2
Input your HTML, CSS, and JavaScript
Enter your code into the respective editor panels. The tool supports standard web languages for building quick demos and experiments.
3
View the live sandboxed preview
Watch the result update instantly in the preview pane as you type. The sandboxed environment ensures your code runs safely and accurately.
4
Share your code via the URL
Copy the browser URL to share your work with others. The URL contains your encoded content, allowing anyone to view your exact code and preview.
Estimated time: PT1M
Frequently Asked Questions
What is the Code Playground tool and how does it work?
The Code Playground is a web-based development environment that allows you to write HTML, CSS, and JavaScript in side-by-side editors. As you type, the tool automatically renders your code in a sandboxed live preview pane so you can see changes instantly. It is designed for rapid prototyping and testing small code snippets without any setup.
How do I save and share my code experiments?
Sharing your work is simple and does not require a database or account. You can share your progress by copying the current browser URL, which contains your encoded code content directly in the string. Anyone with the link will be able to view and run your specific code configuration exactly as you left it.
Is there a cost to use the Code Playground or do I need an account?
This tool is completely free to use and falls under our free tier with zero credit cost. You do not need to sign up or create an account to start coding, though authenticated users enjoy higher rate limits for their sessions. It is an open access tool intended for developers, students, and experimenters.
What are the browser requirements for the live preview?
The Code Playground runs entirely in your web browser and requires a modern browser with JavaScript enabled to function. Since it uses a sandboxed preview environment, it works best on updated versions of Chrome, Firefox, Safari, or Edge. No local software installation or plugins are required to run your HTML, CSS, or JS code.
Does the Code Playground support backend languages like Python or PHP?
No, this specific tool is focused exclusively on frontend web technologies including HTML, CSS, and JavaScript. It provides a client-side execution environment to preview how your code will look and behave in a standard web browser. For backend logic, you would need to simulate API calls or use mock data within the JavaScript editor.
Is my code private and secure while using this tool?
Your code is rendered within a sandboxed environment to ensure security while you work. Because the tool uses URL-encoded sharing rather than a central database, your code is only accessible to those you share the specific link with. We do not store your snippets on our servers, giving you control over your own data privacy.
Are there any limitations on how much I can use the tool?
While the tool is free, we implement standard rate limits to ensure stability for all users. Anonymous users can make up to 200 requests per session, while authenticated users have a higher limit of 1000. These limits are typically more than enough for standard coding, testing, and sharing of web prototypes.
