JWK Inspector
Inspect JSON Web Keys and JWKS with thumbprints and embedded certificates.
What is JWK Inspector?
A JWK/JWKS inspector reviews JSON Web Keys used to sign or encrypt tokens, including thumbprints and embedded certificates.
How it works
Paste a JWK or JWKS document. PacketWizard enumerates keys and surfaces identifiers (kid), algorithms, and certificate material when present.
Common issues
kid mismatch
If a JWT kid does not exist in the JWKS, verification fails. Check key rotation and cache TTLs on the relying party.
Frequently asked questions
Where do I get a JWKS URL?
OpenID discovery documents expose jwks_uri. Use the OpenID Discovery Viewer to locate it for a given issuer.
Related tools
Continue with these related PacketWizard tools for adjacent diagnostics.
JWT InspectorDecode, inspect, and verify JSON Web Tokens with claim analysis and signature validation.OpenID Discovery ViewerRetrieve and analyze OpenID Provider configuration from the well-known discovery document.Certificate ViewerParse and display X.509 certificate details from PEM, Base64, or DER.