Create and sign JSON Web Tokens with custom payloads
JWT Encoder
Create and sign JSON Web Tokens with custom payloads
Use a strong secret key (at least 32 characters recommended)
Security Note
All JWT generation happens locally in your browser. Your secret key is never sent to any server. Never share your secret key or use it in client-side code. JWTs are signed, not encrypted—anyone can read the payload.
Create and sign JSON Web Tokens (JWT) for authentication and data exchange. Our JWT encoder supports multiple algorithms (HS256, HS384, HS512), lets you add custom claims, and generates production-ready tokens. All processing happens in your browser—your secrets stay private.
How to Use
- 1Enter your JWT payload with claims (iss, sub, exp, etc.)
- 2Select the signing algorithm (HS256 recommended)
- 3Enter your secret key for signing
- 4Add standard claims like expiration and issued time
- 5Generate and copy the signed JWT