JWT Encoder/Decoder
Create, decode, and verify JSON Web Tokens
JWT Tool
About JWT
JSON Web Tokens (JWT) are a compact, URL-safe means of representing claims between two parties.
- Structure: Header.Payload.Signature (three Base64-encoded parts)
- Stateless: All information is contained within the token
- Secure: Cryptographically signed to verify authenticity
- Expiration: Can include expiration time for automatic invalidation
Security Note: Never put sensitive information in JWT payload as it can be decoded without the secret. Always use HTTPS in production and keep your secret keys secure.