React Live Preview Tool

Q: What code formats does the Live Preview accept?

The tool accepts standard React components written in JSX (.jsx) or TSX (.tsx). Your component should export a default function or const. The language is auto-detected from your code — if it contains TypeScript annotations like interfaces, type aliases, or generics, it compiles as TSX; otherwise as JSX.

Q: How are external dependencies handled?

When your component imports npm packages (e.g. framer-motion, lucide-react, recharts), the compiler resolves them via esm.sh — a fast ESM CDN. Dependencies are loaded on-the-fly in the preview iframe without any manual installation. The dependency panel shows you exactly which packages were detected.

Q: Is my code stored or sent to a database?

No. The Live Preview is entirely runtime. Your source code is sent to a secure server-side compiler (esbuild), transformed into an ESM bundle, and returned to your browser. Nothing is persisted, logged, or saved to any database.

Q: Why did my component fail to compile?

Common reasons include: missing default export, Node.js built-in imports (fs, path, etc.) that can't run in the browser, syntax errors, or imports from local project files (@/components/...) that aren't standard shadcn/ui components. The error message will indicate the exact issue and line number.

Q: Can I preview full-page layouts?

Yes. Components using min-h-screen, full-width layouts, or complex grid systems render correctly. Use the Full-Screen button to see your layout at actual viewport dimensions, and switch between responsive, mobile (390px), and tablet (768px) viewports.

Q: Is the React Live Preview free? What is the daily limit?

Yes, the Live Preview tool is free to use with a limited free tier — 3 preview generations per day per account. Each click of 'Generate Preview' counts as one usage. Upgrade to a Plus or Pro plan for higher or unlimited daily quotas. The quota resets at midnight UTC.

A free React live preview tool — paste any JSX or TSX component and see it rendered instantly. No local setup required (limited to 3 free previews per day).

JSX → TSX TSX → JSX Live Preview

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LIVE DEMO

jsx → tsx

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Built for Speed and Simplicity

A free React playground for prototyping, testing, and sharing components — no sign-up needed to start (limited free tier applies).

Instant free preview

Paste any React component and see it rendered live in an isolated sandbox — no local setup required. The free tier gives you 3 previews daily.

Dependency detection

Automatically parses your import statements and shows every npm package, shadcn/ui component, and local module used.

Full-screen mode

Expand the preview to fill your entire viewport. Test responsive layouts with mobile, tablet, and desktop viewports.

JSX & TSX support

Auto-detects whether your code is JavaScript JSX or TypeScript TSX and compiles accordingly — zero configuration.

How It Works

Three steps from raw source code to interactive preview — free, no sign-up required.

Paste your component

Drop any React component — functional, with hooks, context, or external packages. JSX and TSX are both supported.

Click Generate Preview

The server compiles your code with esbuild, resolves all imports to esm.sh CDN URLs, and returns a self-contained ESM bundle.

See it live

The bundle is injected into a sandboxed iframe with Tailwind CSS pre-loaded. Interact with your component in real-time.

Frequently Asked Questions

What code formats does the Live Preview accept?▼