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JWT viewer / decoder

Decode a JWT header and payload. Optionally check an HS256 signature if you supply the secret. Decoding is not verification.

Result

Run the tool to see results here.

About JWT viewer / decoder

JWT viewer / decoder is a free online developer tool. Decode a JWT header and payload. Optionally check an HS256 signature if you supply the secret. Decoding is not verification.

Enter your input, adjust the options (token and secret) and run it. The result appears right next to the form, is never stored, and you can copy or save it in one click. No account is needed.

How to use JWT viewer / decoder

  1. Type or paste your input into the form.
  2. Choose the options you need: token and secret.
  3. Press Run, or use Ctrl/⌘ + Enter.
  4. Copy or save the result from the panel on the right.

JWT viewer / decoder FAQ

What does JWT viewer / decoder do?

Decode a JWT header and payload. Optionally check an HS256 signature if you supply the secret. Decoding is not verification.

Is JWT viewer / decoder free to use?

Yes. JWT viewer / decoder is free, with no sign-up or account required.

Is my data safe?

Results are never stored. See our privacy policy for details.

What options does JWT viewer / decoder have?

You can set: Token and Secret.

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