Feature Description
JWT Inspector
Decode JWT locally and inspect PEM/JWK/certificate key material without signature verification.
Decode JWT header/payload/time claims for debugging only. Signature is NOT verified.
Paste a PEM public/private key, certificate, JWK, or JWK Set to inspect algorithms, thumbprint, and PEM/JWK structures.
Common use cases
- Use this page when debugging login flows, API authorization, or third-party callbacks and you need to inspect JWT headers, payloads, and expiry values quickly.
- It is useful when you receive a token and want to see issuer, audience, timestamps, or claims before doing deeper server-side validation.
- If you are checking PEM, JWK, or certificate-related content and just need a fast structural look, this page is a convenient first step.