Encode and decode JSON Web Tokens (JWT) with header, payload, and signature validation
JSON Web Token is a compact, URL-safe means of representing claims to be transferred between two parties.
A JWT consists of three parts: Header, Payload, and Signature, separated by dots (.).
This tool is for educational purposes. Never use weak secrets in production environments.
The tool automatically checks if a JWT token is expired based on the "exp" claim.
The JWT Encoder/Decoder tool provides a complete solution for working with JSON Web Tokens. Whether you need to decode existing tokens to inspect their contents or create new tokens for authentication, this tool supports the full JWT specification with proper Base64URL encoding and HMAC-SHA256 signatures.