JWT Decoder
Decode JWT headers and payloads locally in your browser.
Decoded only; signature is not verified.
JWT input
JWT guide
- Enter a JWT or load the sample.
- Review the header and payload.
- Header
- The first segment describing the token type and algorithm.
- Payload
- The second segment containing claims.
- Signature
- The third segment; this tool does not verify it.
- Claims
- Payload fields such as iat, nbf, and exp.
Limitation: This tool does not verify signatures or trust tokens.
Safety: Do not enter passwords or real authentication tokens.