JWT Decoder

Decode JSON Web Tokens completely client-side. Inspect algorithm headers, payload claims, and token expiration timestamps securely.

Encoded JWT Token

How to use this tool

Step 1

Paste your encoded JWT string (header.payload.signature) into the input box or click 'Sample JWT' to try an example.

Step 2

Review decoded JSON header and payload objects with color-coded syntax and live expiration validation.

Step 3

Click the Copy button on either the header or payload card to grab formatted JSON for your tests.

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