JWT Token Decoder

Decode the contents of a JSON Web Token (JWT) - view the header, payload and signature

What is a JWT Decoder?

This tool allows you to decode and view the contents of JSON Web Tokens (JWT). A JWT consists of three parts:

1. Header

Contains metadata about token type and encryption algorithm

2. Payload

Contains basic information (claims) about the user and permissions

3. Signature

Checks the integrity of the token (not checked in this tool)

What is this for?

  • Debugging tokens during development
  • Authorization token content check
  • JWT training
  • Token structure analysis
Important: This tool only decodes tokens and does not verify their authenticity. Never enter sensitive tokens on third-party sites.