A full-featured code playground that runs right in your browser — no install needed.
Type or paste code and execute it with a click. Results appear immediately in the Console panel, including logs, errors, and return values.
Switch to HTML or CSS mode and preview your full web page rendered in the Output tab. Great for quickly prototyping layouts and styles.
Write code with the same editor that powers VS Code. Syntax highlighting, IntelliSense, bracket matching, and more — all in the browser.
Infinite loop detection automatically stops runaway code before it freezes your browser. Safe to experiment freely without any risk.
Your code is preserved in your browser between sessions. Close the tab and come back later — everything is still there waiting for you.
Switch between themes to suit your environment. Dark mode for night sessions, light mode for bright screens — one click to change.
Learning JavaScript? Practice concepts, test examples from tutorials, and see how code behaves — all without any setup or installation.
Quickly isolate a bug without spinning up a full project. Paste the problematic snippet, run it, and find the issue in seconds.
Turn an idea into working code instantly. Test an API response, validate a regex, or sketch a UI concept without any boilerplate.
Type or paste your JavaScript into the editor and press Ctrl+Enter (or Cmd+Enter on Mac). Your code executes instantly and the output appears in the Console panel on the right.
Yes. Click the HTML or CSS tab at the top to switch modes. Then open the Output tab to see your rendered page. All three languages work together and are combined and rendered live.
Yes. Your code is automatically saved to your browser's local storage after every change. Close the tab, come back later — your last code will still be there.
Console shows the results of JavaScript
execution — console.log output, errors, and
return values. Output renders your HTML and
CSS as a live web page inside a sandboxed frame.
Yes, completely free with no sign-up or account required. Just open the page and start coding.