Tools / 03. Developer & JSON Workbench

JWT Claims Inspector

Decodes base64url JWT payload claims client-side. Inspect token subject, expiration, and payload safely.

Inspect Token Claims

100% In-Browser Sandbox

Frequently Asked Questions

What is the primary function of JWT Claims Inspector?
Decodes base64url JSON Web Tokens (JWT) client-side into header and payload JSON with expiry timestamp checking. Input is accepted as Base64url encoded 3-part JWT token..
Are files or data submitted to JWT Claims Inspector stored on a server?
No. 100% client-side. Token is never transmitted over network.
What are the system requirements or limitations?
Processing performance depends on your local browser engine and available device memory. No account, sign-up, or software installation is required.