JWT Generator
Create signed JSON Web Tokens with custom header, payload, secret, and HMAC algorithm.
JWT Generator
Create signed JSON Web Tokens for local development, API tests, examples, and authentication debugging. Signing runs in your browser.
Supported signing algorithms
- HS256
- HS384
- HS512
Use strong secrets for real systems. This generator is intended for test tokens, development workflows, and debugging sample claims.
How to use JWT Generator
The JWT generator creates signed tokens for development and testing. It helps you build sample tokens without wiring up a full auth service.
Developers often use this page when they need jwt generator, jwt token generator, generate jwt, and jwt creator.
Privacy and data handling
This generator is for local JWT testing and should use throwaway payloads and secrets.
- Avoid using production signing secrets in browser tools.
- Generated tokens are visible on the page and can be copied through your browser clipboard.
- Use your backend auth system for real token issuing and verification.
Examples
Create a test JWT payload
Input
{"sub":"123","role":"admin","exp":1700000000}Output
eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...Generated tokens are useful for tests, but production tokens need proper secrets and verification.
Steps
- 1Enter header, payload, and signing settings.
- 2Generate the token.
- 3Use it only in local or test environments unless you fully understand the security impact.
Common use cases
- Create a token for API tests.
- Debug claim handling in a local app.
- Learn how JWT header, payload, and signature fit together.
Practical tips
- Never use weak secrets in production.
- Keep token expiration short for tests that mimic real auth.
- Do not put sensitive private data in JWT payloads.
FAQ
Can I use generated JWTs in production?
Only if you use proper secrets, algorithms, expiration, and server-side verification. This tool is mainly for development and testing.
Is JWT payload encrypted?
No. A normal JWT payload is encoded, not encrypted. Anyone with the token can read the claims.