Parse and verify JSON Web Tokens (JWT), view token header, payload, and signature information
JWT consists of three parts: header, payload, and signature, separated by dots
Header contains token type and encryption algorithm information
Payload contains claims data such as user info, expiration time, etc.
This tool does not verify signatures, do not use for security validation in production
Use JWT Decoder to parse and verify JSON Web Tokens (JWT), view token header, payload, and signature information.
Use it when you need a quick formatting, validation, or debugging step without leaving the browser.
Paste representative sample data so you can catch formatting issues and confirm the output before reuse.