How do I use a jwt decoder in React?

React provides built-in or community packages for jwt decoder functionality. See the code example above for a production-ready pattern you can copy into your project.

Is there a recommended jwt decoder library for React?

Yes. The code example above shows the most widely-used approach in the React ecosystem. For client-side use cases, you can also use DevToolHQ's online jwt decoder at devtoolhq.com/tools/jwt-decoder.

Can I use DevToolHQ's jwt decoder with React?

Absolutely. DevToolHQ's jwt decoder runs 100% client-side in your browser, making it perfect for quick debugging during React development. No data is sent to any server.

Last updated: April 13, 2026

JWT Decoder for React Developers

Quick Answer

DevToolHQ's jwt decoder works great alongside React. Use it to quickly jwt decoder during development, then integrate the pattern into your React codebase using the code example below.

Use Cases in React

1.Verify user authentication tokens
2.Debug token expiration and claims
3.Implement role-based access control from JWT claims
4.Validate tokens from third-party auth providers

React Code Example

React

// Decode a JWT payload in the browser (no verification)
function decodeJwt(token: string) {
  const base64Url = token.split('.')[1];
  const base64 = base64Url.replace(/-/g, '+').replace(/_/g, '/');
  const json = decodeURIComponent(
    atob(base64).split('').map(c =>
      '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2)
    ).join('')
  );
  return JSON.parse(json);
}

Try the tool directly

Free, no signup — works in your browser

Open Jwt Decoder

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