Free Online JWT Encoder & Token Generator
Effortlessly create JWT tokens with custom headers, payloads, and optional signing for authentication and API development.
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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)
Examples of Real-World Usage
6 real-world examples
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.
Key Features of JWT Encoder
Our JWT Encoder tool allows you to create JWT tokens with custom headers and payloads, with optional signing support.
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.
How to Use
Simple 3-step process
Step 1
Enter the JWT header and payload as JSON objects.
Step 2
Optionally add a secret key for signing the token.
Step 3
Click Generate and copy the JWT token.
Frequently Asked Questions
Everything you need to know about our process, pricing, and technical capabilities.
See Full FAQJWT (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.
No, you can create unsigned JWTs without a secret. However, signed tokens provide integrity verification and are recommended for production use.
Common algorithms include HS256 (HMAC), RS256 (RSA), ES256 (ECDSA), and more. The algorithm is specified in the header.
Standard claims include: sub (subject), iat (issued at), exp (expiration), iss (issuer), aud (audience), and more. You can also add custom claims.
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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