Run React In The
Browser. Instantly.
Browser. Instantly.
Browser. Instantly.
Skip the terminal and the bulky node_modules folder. Just write pure JSX and watch it render instantly with pre-injected Babel and React 18 CDNs. No installation required.
Zero-Config React Prototyping.
Don't boot up a heavy local Webpack environment just to test a single component. Our client-side engine transpiles JSX to pure JavaScript in real-time, right in your browser's memory.
The Official Monaco Editor Engine
NitroIDE doesn't just look like VS Code; it runs on the exact same open-source text editing core (Monaco). You get the identical syntax highlighting, multi-cursor editing, and bracket matching you are used to.
import * as monaco from 'monaco-editor';
monaco.editor.create(document.getElementById('container'));
Native Emmet Pre-Installed
No extensions required. Emmet abbreviations are built natively into the compiler. Scaffold massive HTML trees and complex CSS properties with a single Tab press.
> Press Tab
Zero RAM Spikes
Tired of Electron apps consuming 4GB of RAM? NitroIDE runs exclusively within your browser's optimized V8 engine. Perfect for Chromebooks and older hardware.
⚡ NitroIDE: Low Memory Footprint
100% Offline Capable
Unlike VS Code Online or GitHub Codespaces, NitroIDE doesn't require a continuous server ping. Once the page loads, you can code complex logic entirely offline.
compileLocal('index.html');
⚡ Rendered successfully.
No "node_modules" Blackhole
Skip the heavy local setup. Use our integrated CDN manager to inject React, GSAP, or Tailwind directly into the browser without touching a terminal.
⚡ React Ready.
Integrated Terminal Experience.
You don't have to give up your integrated terminal. Our developer console mirrors the desktop experience, capturing native object serialization, network errors, and CLI commands directly in the browser.
- Native Object Serialization: Inspect deeply nested JSON arrays exactly like Chrome DevTools.
- Syntax Highlighted Errors: Click any error to instantly jump to that exact line in the editor.
-
Integrated CLI: Type
install gsap,export zip, orformatdirectly into the console to control the workspace.
The Desktop Experience, Unshackled.
We retained the premium, edge-to-edge dark mode aesthetic you love from desktop editors, but rebuilt the file system to be entirely virtual and draggable.
- Monaco Editor Engine: Powered by the exact same text-editing core as VS Code with Emmet support.
- Device Emulation: Instantly toggle your live preview between Desktop, Tablet, and Mobile breakpoints.
- Virtual File System: Manage multiple `.js` and `.css` modules in a clean, draggable slide-out sidebar.
Common Questions
Straight answers about React in the browser.
Do I need npm, Node.js, or Webpack to run React here?
No. React 18 is pre-injected from a CDN — just write JSX and watch it render.
Can I use hooks and state?
Yes. useState, useEffect, and other hooks run normally in the browser preview.
Can I add libraries like Tailwind or Framer Motion?
Yes. Inject any package from unpkg through the workspace console — no package manager needed.
What happens when my prototype outgrows the playground?
Export it as a ZIP and continue in a full toolchain. Nothing locks you in.
Full Workspace. $0.
Other cloud web IDEs charge you monthly just to keep your frontend projects private. We built a free, local code editor for the community.
Free Forever — The Only Plan
Every built-in feature free. No card required.