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JWT Decoder

Decode JWT header and payload online. Fast, free, and completely private.

JWT Decoder

Decode JWT header and payload online.

Token Input
Paste a JWT token to decode its header, payload, and claims. Signature verification is not performed.
JWT decoding only reads token contents. It does not verify the signature. Do not paste sensitive production tokens.
0 / 51,200 characters
Decoded Result
Decoded header, payload, and claims will appear here
Paste a JWT token on the left and decode it.
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How to use JWT Decoder

1

Paste Input

Paste your text, code, data, or values into the editor above.

2

Choose Options

Adjust any formatting, conversion, or processing options for your task.

3

Copy or Download Result

Copy the result or download it when an export option is available.

Key Features

  • Lightning Fast: Results are generated almost instantly using state-of-the-art tech.
  • 100% Free: No hidden costs, no premium tiers, and no subscriptions required.
  • No Registration: Start using the tool immediately without providing an email address.
  • Secure & Private: Files are processed locally or deleted immediately from our secure servers.

Frequently Asked Questions

Is this JWT decoder free?

Yes, you can decode JWT headers, payloads, claims, and expiry information completely for free.

What is a JWT?

A JWT is a JSON Web Token commonly used to pass signed identity or authorization claims between systems.

What parts does a JWT have?

A standard JWT has three dot-separated parts: header, payload, and signature.

Does this tool verify JWT signatures?

No. This tool decodes JWTs only. It does not verify signatures or prove that a token is valid.

Can I decode JWT header and payload?

Yes, paste a JWT and will decode and pretty-print the header and payload JSON.

Can I check JWT expiry time?

Yes, if the payload includes an exp claim, the tool converts it into a readable date and shows whether it is expired.

What does exp mean in JWT?

The exp claim is the token expiration time, stored as Unix seconds.

What does iat mean in JWT?

The iat claim is the time when the token was issued, stored as Unix seconds.

Is it safe to paste JWT tokens online?

Do not paste sensitive production tokens. JWT decoding only reads token contents and does not verify the signature.

Are my tokens stored?

Toolkit does not store your JWT tokens permanently.

Does this work on mobile?

Yes, the JWT Decoder is responsive and works on mobile, tablet, and desktop devices.