JWT Encoder
Build local test JWTs by editing the header, payload, algorithm, and signing material. Use this for development and fixtures, then inspect the result in the JWT Decoder.
Local test-token builder
No server uploadEncode and Sign a JWT
This encoder is useful for local development, demos, and test fixtures. Do not paste production private keys or create production auth tokens in a browser tool.
Generated token
Testing onlyCompact JWT Output
Generated JWT will appear here.
When a JWT encoder is useful
A JWT encoder is useful for developers who need predictable test tokens, fixture data, documentation examples, or local verification workflows. It is not a replacement for your authentication server and should not be used with production private keys.