JWT Secret Generator
JWT
Secret
GeneratorGenerate cryptographically secure JWT signing secrets using server-side CSPRNG. Base64url-encoded by default for full RFC 7518 compliance. Never stored or logged.
64
Bytes
512
Entropy Bits
Your Secure JWT Secret
Secret Strength Good
512 bits of entropy · Base64url encoding · Server-side CSPRNG
Secret Length (Bytes)
16 256
Encoding Format
JWT Secret Security
JWT signing secrets must be generated with a cryptographically secure
pseudo-random number generator (CSPRNG) and kept confidential. This tool uses
Node.js crypto.randomBytes for server-side generation. Secrets are never stored, logged, or cached.
- Use at least 32 bytes (256 bits) for HMAC-SHA256 per RFC 7518
- Store secrets in environment variables — never commit to version control
- Rotate secrets periodically and revoke compromised tokens immediately
- Never expose secrets client-side or in browser devtools
jsonwebtoken jose PyJWT jwt-go
CSPRNG
Server-side only
Zero Storage
Memory only