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JSX → live React preview, with Tailwind preloaded. Babel + React 18, all client-side.
The preview iframe pre-loads React 18, ReactDOM 18, @babel/standalone (for JSX transform), and Tailwind v4 Play CDN. Mount with ReactDOM.createRoot(document.getElementById('root')).render(<App />). External fetch calls require CORS-allowing endpoints.
Write JSX in your browser and see a live React 18 preview. @babel/standalone transforms JSX → JS in your browser, the result runs in a sandboxed iframe with React 18, ReactDOM 18, and Tailwind v4 pre-loaded. Includes ready-to-remix examples (counter, fetch, form, hooks). Everything client-side — code never leaves your tab.
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