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JWT Decoder — Free Online, No Upload Needed

Decode JWT header and payload locally. Signature is NOT verified — never paste secrets.

Data & DevFreeNo upload

Open the interactive jwt decoder tool — free, runs in your browser.

About this jwt decoder

Inspect a JSON Web Token during development: decode its header and payload to check expiry, issuer and claims. Decoding is fully local, but signatures are not verified, so treat output as untrusted.

How to use

  1. Paste the JWT.
  2. Click Decode.
  3. Review the formatted header and payload JSON.

JWT Decoder FAQ

Is this safe for production tokens?

Decoding is local, but avoid pasting sensitive tokens on shared machines. We never transmit them.

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