JWT Decoder

Split a JWT into its three parts and format the header and payload as JSON. exp, iat and nbf become readable dates and the tool states clearly that the signature is not verified.

Processed locally, never uploadedNo sign-upFree

Key features

  • Decode header, payload and signature separately
  • Turn exp, iat and nbf into readable dates
  • Detect RS, HS and ES algorithms without key requests

How to use

  • Open the page and start; no account required.
  • Enter text or choose a file, then press Ctrl / ⌘ + Enter to run.
  • Copy or download the result; everything runs locally in your browser.

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