How to encode and sign a JWT in Go
Step-by-step Go guide to encode and sign a JWT. Use the browser tool for quick testing, then integrate the snippet into your application.
Last updated August 26, 2026
Steps
- 1
Open the jwt encoder tool and generate or process your value in the browser.
- 2
Copy the output — nothing is sent to a server; all processing is client-side.
- 3
Store secrets in environment variables or a secrets manager, never in source code.
- 4
Integrate the Go snippet below into your application.
- 5
Test end-to-end before deploying to production.
Code Example
token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
"sub": "user-1",
})
tokenString, _ := token.SignedString([]byte(secret))Frequently Asked Questions
Is it safe to use the browser tool for encode and sign a JWT?
Yes. All computation uses Web Crypto in your browser. No keys or tokens are transmitted to any server.
Can I use this Go code in production?
Yes, with proper secret storage. Replace placeholder values with environment variables and follow security best practices.
Continue
Related tools and reading on JWTSecrets.