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JWT Signer

Create and sign JWT tokens locally

Processed locally

About this tool

Create and sign JSON Web Tokens locally with custom headers and payloads. Supports HS256, HS384, HS512, RS256, and ES256 algorithms. Set expiration times, issuer, subject, and custom claims. Generate tokens for testing APIs and authentication flows without needing a running backend server.

jwtsigncreatetokensecretalgorithmauth

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Claims

Issuer (iss)Subject (sub)Expiration (exp) - Unix timestampSecret Key

Custom Claims (JSON)

Generated JWT

Output will appear here...