How it works
JWT / JWS / JWK Studio is designed to give you the result immediately. The calculation or processing happens on your device for this tool, so normal use does not require an account or a file upload.
Privacy
This tool is marked offline-capable. Your inputs are used in the current browser/app session and are not required to be sent to Wiunix Tools to perform the operation.
Decode, verify, sign and inspect JWT/JWS/JWK/JWKS locally
Inspect decoded JSON plus raw Base64URL header, payload and signature segments; independently verify cryptographic signatures before claim-policy checks; and enforce allowed algorithms, kid, issuer, audience, subject and clock tolerance.
Use explicit shared-secret, PEM, JWK or pasted JWKS trust material, sign HS/RS/PS/ES tokens, inspect human-readable exp/nbf/iat timestamps, generate JWK material and RFC 7638 thumbprints, and export decoded/verification/token results without silently fetching remote trust sources.
- Raw Base64URL + decoded claims
- Independent signature vs claims-policy results
- alg / kid / iss / aud / sub / clock controls
- Signing + JWK/JWKS generation, inspection and export