Is my JWT safe to paste here?

Yes. JWT decoding is done entirely in your browser. No data is sent to servers.

Does JWT Inspector log or store the data I paste into it?

No. JWT Inspector processes everything locally in your browser. Nothing is sent to a server, logged, or stored. Your code, secrets, and data never leave your machine.

Which browsers are compatible with JWT Inspector?

JWT Inspector works in all modern evergreen browsers: Chrome 90+, Firefox 88+, Edge 90+, and Safari 14+. Internet Explorer is not supported.

Is JWT Inspector free to use?

Yes, JWT Inspector is 100% free with no usage limits, no watermarks, and no hidden charges. The platform is supported by non-intrusive advertising so all tools stay free for everyone.

Do I need to create an account to use JWT Inspector?

No account or registration is required. Open JWT Inspector and start immediately — no email, no sign-up, no personal information needed.

Is my data safe when using JWT Inspector?

Yes. JWT Inspector runs entirely in your browser using client-side JavaScript. Your files and data never leave your device and are never transmitted to our servers.

Does JWT Inspector work on mobile and tablet devices?

Yes. JWT Inspector is fully responsive and tested on smartphones, tablets, and all major desktop browsers (Chrome, Firefox, Safari, and Edge). The interface adapts automatically to any screen size.

JWT Inspector

Decode and inspect JWT tokens

FreeNo sign-upDeveloper Tools →

JWT Inspector is a free, browser-based web development and coding tool. Decode JWT tokens and inspect headers, payload, and signature. View expiry, issuer, and all claims.

Web developers, software engineers, and DevOps professionals use JWT Inspector every day to save time and skip the overhead of desktop software or paid services. No installation, no account, and no technical knowledge required — just paste your content into JWT Inspector and get results in seconds. Your files never leave your browser — full privacy by design.

JWT Inspector

JWT Token

Valid structureHS256Expires 11/20/2286, 11:16:39 PMIssued 1/18/2018, 7:00:22 AM

Header

{
  "alg": "HS256",
  "typ": "JWT"
}

Payload

{
  "sub": "1234567890",
  "name": "John Doe",
  "iat": 1516239022,
  "exp": 9999999999
}

Signature

SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c

Decoded locally. Signature not verified — paste the secret in production tools for verification.

How to use JWT Inspector

Paste JWT

Paste your JWT token.

Inspect

View decoded header and payload.

Check claims

Verify expiry and custom claims.

Use Cases

Debugging and validating data formats during API development
Preparing test fixtures and sample payloads
Encoding and decoding data for integrations and authentication flows
Formatting and linting configuration files before deployment

Key Benefits

100% free with no usage limits, watermarks, or hidden fees
No account or sign-up required — use it instantly
Works in all modern browsers on desktop, tablet, and mobile
Privacy-first: all processing runs locally, files never leave your device

JWT Inspector

How to use JWT Inspector

Paste JWT

Inspect

Check claims

Use Cases

Key Benefits

Frequently Asked Questions

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