developer tool

JWT Encoder

Encode and build unsigned JSON Web Tokens (JWT) locally in your browser. Generate the standard Base64URL JWT structure securely without sending data to a server.

Processing happens completely locally in your browser. Tokens are never sent to a server.

Security Note: This tool only builds the Base64URL-encoded structure of a JWT. It does not cryptographically sign the token. The resulting JWT is unsigned (it ends with a trailing period) and should not be presented as a secure, authenticated token.

JWT Header (JSON)

JWT Payload (JSON)

Encoded JWT

Encoded JWT will appear here.