JWT Decoder

Deconstruct JSON Web Tokens (JWT) locally. Review token header attributes and claim payloads directly in your browser.

JWT Token (Max 5,000 characters)

Header

Payload (Claims)

Critical Security Warning:

Avoid pasting live access tokens, API keys, private keys, passwords or real production secrets. Even though the tool runs locally, using sample or masked data is safer.

This tool does not verify the JWT signature; it only decodes the token locally in your browser. Avoid pasting live access tokens.

Token Metadata Info

Decoded token fields will be listed here.