JWT Secret Generator
Generate cryptographically secure random keys for signing and verifying JSON Web Tokens (JWTs)
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What is a JWT Secret?
A JWT secret is a private cryptographic key used to sign JSON Web Tokens. This signature ensures that the token hasn't been altered after being issued and verifies its authenticity. The strength and security of your JWT implementation largely depends on how secure this secret key is.
Our generator creates highly secure random secrets using the browser's built-in crypto.getRandomValues() API, which provides cryptographically strong random values suitable for security-sensitive applications.
How to Use This Generator
- Use the slider to adjust the length of your secret (between 32 and 512 characters).
- Click "Generate Secure Secret" to create a new cryptographically secure random string.
- Copy the generated secret using the "Copy to Clipboard" button.
- Store this secret securely in your server environment variables or secure key management system.
Security Best Practices
- Never expose your JWT secret in client-side code or public repositories.
- Store secrets in environment variables or dedicated secret management services.
- Use different secrets for development and production environments.
- Rotate secrets periodically to minimize the impact of potential leaks.
- Consider using asymmetric key pairs (RS256, ES256) for larger applications instead of symmetric secrets (HS256).