Is this React Online Compiler free to use?

Yes, React Online Compiler is 100% free to use online with no installation or account required.

How do I run code using React Online Compiler?

Simply type or paste your source code into the editor and click the Run button to view the output in the console.

Can I use React Online Compiler on mobile devices?

Yes, the compiler is fully responsive and compatible with Android, iOS, Windows, macOS, and Linux web browsers.

React Online Compiler / Playground

Write, test, and instantly preview React components, JSX, and Hooks online with our free Online React Compiler / Playground. Run React code directly in your browser without installing Node.js, npm, React CLI tools, or configuring a local build environment.

How to Use This React Compiler

Write or paste your React code
Enter React, JSX, and JavaScript code in the Code Editor. You can create functional components, props, event handlers, state, and supported React Hooks.
Edit JSX and component logic
Build your component using JSX syntax and React APIs such as useState() or useEffect(). The pre-configured React and Babel environment handles supported JSX transformation in the browser.
Click the Run button
Select Run to execute your code and render the React component.
Check the live Output preview
View your rendered interface in the Output screen. Use the available copy, download, and delete controls while testing different component versions.

Key Features

Zero Installation: Use React without installing Node.js, npm, or local build tools.
Pre-Loaded React Environment: React, ReactDOM, and Babel are configured for supported browser examples.
JSX Support: Write familiar React JSX syntax directly in the editor.
React Hooks: Practice Hooks such as useState and useEffect.
Functional Components: Create and test reusable React components quickly.
Props & State Testing: Experiment with component data and interactive state updates.
Event Handling: Test button clicks, form events, input changes, and other UI interactions.
Instant Live Preview: Click Run and immediately view the rendered component.
Dark & Light Mode: Switch editor themes for comfortable coding.
Output Controls: Copy, download, or clear the generated result from the Output panel.

1. Do I need Node.js installed to use this React compiler?

No. For supported examples, this Online React Compiler runs directly in your browser using its pre-configured React and Babel environment. You do not need to install Node.js, npm, or create a local React project.

For example, you can test a simple component such as:

A full local environment may still be required for larger production applications, npm packages, build optimization, routing setups, and multi-file projects.

2. Can I use React Hooks like useState and useEffect here?

Yes. You can test supported React Hooks inside functional components.

A simple useState example:

You can also test useEffect:

3. Does this compiler support JSX and custom component rendering?

Yes. The playground is configured to process supported JSX syntax with Babel, allowing you to create reusable custom components.

This is useful for practicing component composition, props, JSX expressions, and reusable UI patterns.

4. Is this online React playground free for students and developers?

Yes. The tool is designed as a free browser-based React playground for students, frontend developers, and React learners who want to quickly practice or test supported React examples.

For example, you can test interactive UI logic without creating a complete project:

The Online React Compiler / Playground is especially useful for learning JSX, Hooks, props, state, events, and component-based frontend development with instant visual feedback.