Free JWT Encoder & Token Generator.
Effortlessly create JWT tokens with custom headers, payloads, and optional signing for authentication and API development.
- Security & Privacy
- Runs in your browser
JWT Encoder
Leave empty for unsigned JWT tokens
Example Templates
JWT Structure
Header
- • Algorithm (alg)
- • Token type (typ)
- • Base64URL encoded
Payload
- • Claims (sub, name, etc.)
- • Standard & custom
- • Base64URL encoded
Signature
- • HMAC or RSA
- • Verifies integrity
- • Optional (unsigned)
Use cases
Real-world uses.
- API Developers & Backend Engineers
- Generate JWT tokens for API authentication, authorization, and secure data exchange between services.
- Frontend Developers & Mobile App Developers
- Create test tokens for development, testing authentication flows, and debugging JWT-based systems.
- Security Engineers & Penetration Testers
- Generate test tokens for security testing, token validation, and authentication vulnerability assessment.
- DevOps Engineers & System Administrators
- Create tokens for service-to-service authentication, microservices communication, and system integration.
- QA Engineers & Testers
- Generate test tokens with different claims, expiration times, and scenarios for comprehensive testing.
- Students & Learners
- Learn about JWT structure, understand token encoding, and practice creating and working with JWTs.
How it works
Three steps.
- 01
Enter the JWT header and payload as JSON objects.
- 02
Optionally add a secret key for signing the token.
- 03
Click Generate and copy the JWT token.
Features
Key Features of JWT Encoder.
JSON Input
Enter header and payload as JSON objects with validation.
Optional Signing
Add a secret key to sign tokens or create unsigned JWTs.
One-Click Copy
Easily copy the generated JWT token with a single click.
Download Token
Download the generated JWT token as a text file.
What is a JWT token?
JWT (JSON Web Token) is a compact, URL-safe token format used for authentication and information exchange. It consists of three parts: header, payload, and signature.
Do I need a secret to create a JWT?
No, you can create unsigned JWTs without a secret. However, signed tokens provide integrity verification and are recommended for production use.
What algorithms are supported?
Common algorithms include HS256 (HMAC), RS256 (RSA), ES256 (ECDSA), and more. The algorithm is specified in the header.
What are standard JWT claims?
Standard claims include: sub (subject), iat (issued at), exp (expiration), iss (issuer), aud (audience), and more. You can also add custom claims.
How do I use the generated JWT?
Use the JWT token in the Authorization header as 'Bearer ' for API authentication, or include it in requests as needed by your application.
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Built by Infyways
Need more than a tool.
These utilities are made by the Infyways studio. When a free tool is not enough, we build the real thing.
