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JWT Inspector

Decode JWT header and payload locally with claim warnings.

Runs in your browser by default — private, fast, and ready to export.

How to use, examples & FAQShow

How to use

  1. Paste a JWT
  2. Inspect header and payload
  3. Review warnings

Example

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...

Benefits

  • Local-only decode
  • Expiry warnings
  • Export claim report

FAQ

Does this verify signatures?

No. It decodes and inspects claims only. Signature verification needs your keys and a verifier.

Do not paste production secrets into shared machines. Decode is local, but treat tokens as sensitive.

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