$ jwt-debugger

Decode, inspect, verify, and safely experiment with JWTs in one place.

JWT Input

Paste a token to decode header, payload, and signature.

Verification

Supported algorithms: HS256/384/512 and RS256/384/512.

Awaiting input

Decoded Sections

Header

No header decoded.

Payload

No payload decoded.

Signature

No signature segment.

Payload Editor

Edit claims and re-encode for test scenarios (signature not regenerated).

Token Timing

No exp, iat, or nbf claims detected.

Quick Checks

Algorithm

Token Type

Issued At