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JWT Decoder

Decode a JSON Web Token's header and payload locally to inspect its claims. This tool does not verify the token's signature.

JWT header and payload decoder

The token is read in this browser. Do not paste a token into a device or page you do not trust.

Header

Payload

Decoding does not verify a JWT

This tool only decodes the header and payload. It does not verify the signature, validate the issuer or audience, or prove who created the token. Never trust a decoded token for authorization.

How to use this tool

  1. Paste a compact token with three dot-separated segments.
  2. Select Decode token to inspect the JSON header and payload.
  3. If the payload contains a numeric exp claim, its UTC expiration time and whether it has passed are shown.

Privacy and limits

Decoding happens in this browser; the token is not sent to a service or saved in browser storage. The signature is not decoded or verified. Read why decoding is different from verification or browse the tool directory.