JWT Decoder
Decode JWT header and payload in your browser. Signature is not verified — for inspection and debugging only.
Format
JWT
Decode JWT header and payload. Decoded only. Signature not verified.
Ctrl+Enter to Decode
Recent Payloads
Payloads you format will appear here for quick access. Stored locally in your browser.
What this tool does
Decode the header and payload of a JSON Web Token so you can inspect claims, expiry, and issuer during debugging.
Privacy
Tokens are decoded locally. Do not paste production secrets on shared machines. Signature verification is not performed.
Use cases
- Inspect claims on an access token during API debugging
- Confirm expiry and audience before tracing auth failures
- Review test tokens without sending them to a third-party decoder