<!DOCTYPE html> <html> <head> <meta charset="UTF-8" /> <title>Hello World</title> <script src="https://unpkg.com/react@17/umd/react.development.js"></script> <script src="https://unpkg.com/react-dom@17/umd/react-dom.development.js"></script> <!-- Don't use this in production: --> <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script> </head> <body> <div id="root"></div> <script type="text/babel"> ReactDOM.render( <h1>Hello, world!</h1>, document.getElementById('root') ); </script> <!-- Note: this page is a great way to try React but it's not suitable for production. It slowly compiles JSX with Babel in the browser and uses a large development build of React. Read this section for a production-ready setup with JSX: https://reactjs.org/docs/add-react-to-a-website.html#add-jsx-to-a-project In a larger project, you can use an integrated toolchain that includes JSX instead: https://reactjs.org/docs/create-a-new-react-app.html You can also use React without JSX, in which case you can remove Babel: https://reactjs.org/docs/react-without-jsx.html --> </body> </html>