JWK Inspector

Review kty, kid, use, alg, required members, and whether private-key material appears in the pasted JWK.

JWK JSON

ReadyStructural inspection does not prove that a key is valid, trusted, or suitable for a particular issuer.

JWT contents are untrusted until signature verification and application-specific claim validation succeed. These browser-local tools do not contact an issuer, fetch keys, or validate authorization policy.

How to use this JWK Inspector

Inspect a JSON Web Key locally and check the required members for common key types. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.