JWT Decoder: Read JSON Web Token Header, Payload and Expiry

Paste a JSON Web Token to read its header and payload, with the issued and expiry times turned into real dates, and a clear “expired / still valid” note.

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How to decode a JWT

  1. Paste the token (with or without “Bearer”).
  2. Read the header, payload and dates.

Questions

Is it safe to paste a real token?

It never leaves your browser. Still, treat tokens like passwords and avoid sharing live ones.

Does it verify the signature?

No. Checking a signature needs the secret or public key, which only the issuing server should have.

Is my data private?

Yes. Everything happens inside your own browser: nothing you type or choose is uploaded to us or anyone else.

Is it free?

Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.