utility

JWT Token Generator

generate signed JWT tokens using plain secrets, RSA private keys, or ECDSA private keys

Ready

Key Mode

Algorithm

Secret / Private Key

Header JSON (Optional)

Input

Output

Token Segments

Generate a token to see segment colors and breakdown.

Header

Base64url JSON metadata (algorithm, token type, key id).

—

Payload

Base64url JSON claims (subject, issuer, expiration, custom claims).

—

Signature

Base64url signature over header.payload using your selected key/algorithm.

—

About JWT Token Generator

JWT Token Generator helps you generate signed jwt tokens using plain secrets, rsa private keys, or ecdsa private keys directly in your browser with no backend dependency.

Use cases

Run JWT Token Generator while debugging API responses and config snippets.
Share normalized output from JWT Token Generator with teammates quickly.
Use JWT Token Generator as part of a repeatable local text-processing workflow.

Examples

Sample JWT Token Generator transformation output.

Input

{
  "sub": "user-123",
  "role": "admin"
}

Output

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyLTEyMyIsInJvbGUiOiJhZG1pbiJ9.signature

Idempotent rerun example for JWT Token Generator when applicable.

Input

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyLTEyMyIsInJvbGUiOiJhZG1pbiJ9.signature

Output

eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiJ1c2VyLTEyMyIsInJvbGUiOiJhZG1pbiJ9.signature

FAQ

Does JWT Token Generator send my data to a server?

No. Execution happens in your browser tab.

Can I share a direct URL for JWT Token Generator?

Yes. Every tool has its own indexable route under /tools/<slug>.