JWT Token Generator Sandbox
Generate and customize JWT tokens for development and testing. Create tokens with custom headers, payloads, and signatures for authentication testing.
JWT Configuration
Minimum 32 characters recommended for HS256
Header
Payload (Claims)
Generated JWT Token
JWT Guide & Security Best Practices
What this tool handles
Generate JWT tokens in multiple signing algorithms (HS256, HS384, HS512, RS256, ES256, none) with a single click. Customize headers, add standard and custom claims, set expiration times, and instantly see the encoded token parts. The copy actions make it easy to move tokens into scripts, API clients, or testing environments without leaving the page.
Each generation updates the token display, showing header, payload, and signature components separately. The validation helpers are handy when you need to verify token structure or debug authentication issues from logs or teammates.
- Multiple signing algorithms (HMAC, RSA, ECDSA, none)
- Custom header and payload configuration
- Standard and custom claims support
- Real-time token generation and display
- Token validation and analysis
JWT Structure
JWT consists of three Base64URL-encoded parts separated by dots: Header.Payload.Signature
eyJzdWI...payload.
SflKxw...signature
Standard Claims
Signing Algorithms
Security Guidelines
- Always validate signatures
- Use HTTPS in production
- Keep secrets secure
- Set appropriate expiration
- Validate all claims
- Use strong algorithms (HS256+)
Request a Feature
Have an idea to improve this tool? Share your suggestions and help us make it better! (One request per day)