JWT Decoder Online — Decode JSON Web Tokens

Decode and inspect JSON Web Tokens (JWT). View header, payload, expiration, and claims. No data is sent to any server.

JWT Token

What is a JWT?

A JSON Web Token (JWT) is a compact, URL-safe token format used for authentication and information exchange. It consists of three Base64-encoded parts: header, payload, and signature, separated by dots.

Is this tool secure?

Yes. JWT decoding happens entirely in your browser. No tokens are sent to any server. Never share your tokens with untrusted online tools.

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