Security
JWT Decoder
Decode JSON Web Tokens and inspect headers, payloads, and expiration times.
Privacy-firstNo trackingRuns locally
Header
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Payload
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How it works
- Paste a JWT into the input.
- The header and payload are decoded locally.
- Errors appear if the token format is invalid.
FAQ
Does this verify signatures?
No. It only decodes the token. Verification requires the signing secret or key.
Is my token stored?
No. The token stays in your browser.