Code Playground

Write and execute code directly in your browser. JavaScript runs in a sandboxed environment, and Python is powered by Pyodide.

Features

• JavaScript Execution: Run JavaScript code in a secure sandboxed iframe
• Python Support: Full Python 3 via Pyodide (loads on first use)
• Code Examples: Pre-built examples for common patterns
• Share Links: Generate shareable URLs with your code
• Keyboard Shortcuts: Quick run with Ctrl+Enter
• Execution Timing: See how long your code takes to run

Limitations

• 5 second timeout: Code that runs longer will be terminated
• No network access: Fetch/requests are blocked for security
• No file system: Cannot read/write files
• Browser-only: Code runs entirely client-side
• Python packages: Only standard library and a few extras available

Tips

• Use console.log() in JavaScript to print output
• Use print() in Python to display results
• Python loads on first use (~5MB download)
• Share links include your code in the URL (keep them short!)