JWT Decoder

Decode and inspect JSON Web Tokens (JWT) instantly. View header, payload, and claims. All processing is 100% private.

JWT Token

What is JWT?

JSON Web Tokens consist of three parts separated by dots (.):

Header

Algorithm and token type information.

Payload

Claims/Data (user info, permissions, expiration).

Signature

Encrypted hash used for verification.

Security Note: Decoding a JWT reveal its contents to anyone. This tool runs entirely in your browser memory; no data is sent to our servers.

Paste your JWT token on the left to inspect its contents instantly.