JWT Secret Generator
Generate cryptographically random signing keys for your JWTs.
Key Size (Bits)
Secure & LocalGenerated entirely on your device using the Web Crypto API's CSPRNG. Store this secret safely — anyone with access to it can forge and sign JWTs for your application.
Base64URL (Recommended)
Hex
JWT Secret Key Generator
A weak secret key means a vulnerable JWT. Attackers can brute-force weak secrets (like "password123") and start signing their own fake tokens as an admin user. Our Secret Generator uses your browser's secure cryptography API to generate highly entropic, random strings for use as HMAC secrets.
Core Features
- Cryptographically SecureGenerated using `window.crypto.getRandomValues()`, ensuring true randomness that is safe for production keys.
- Configurable LengthsGenerate 256-bit, 384-bit, or 512-bit keys encoded in Hex or Base64 format to match your framework's requirements.