Generate JWT Token Online

JWT Token Generator & Signer

JWT Signing Algorithm
JWT Header (in JSON)
Add Standard Claims
JWT Payload (in JSON)
Signing Secret or Key
Explore more tools: Try our JWT Verifier to validate token signatures or use the JWT Decoder to view and debug your JWTs.

Create and sign JWT tokens securely, instantly, and privately—right in your browser.

Effortlessly generate and sign JWT tokens on the fly—right within your browser for maximum privacy and security. Choose from top JWT algorithms like HS256, RS256, and ES256. All processing is 100% local to your device, providing complete confidentiality. Perfect for developers, testers, and security professionals managing JWT authentication and authorization.

How to Generate & Sign JWT Tokens

This simple tool lets you create, sign, and check JWT tokens with various algorithms and key types. JSON Web Tokens (JWTs) securely transmit claims between two parties using a compact, URL-safe format. Here’s a step-by-step walkthrough and technical details for every tool feature.

How to Use the JWT Token Generator — Step-By-Step

  1. Choose a signing algorithm. Use symmetric options (HS256, HS384, HS512) with a shared secret, or asymmetric options (RS256, ES256, etc.) with a public/private key pair. Algorithms define how your token gets securely signed.
  2. Provide a signing key. For symmetric algorithms, enter or generate a secure random secret. For asymmetric options, input a PEM-encoded private key. This tool can help you create secure keys.
  3. Edit the JWT header and payload. The header sets the algorithm and type. The payload includes claims such as user details or session data. Use quick-add buttons for standard claims like exp (expiration), iat (issued at), nbf (not before), aud (audience), iss (issuer), sub (subject), and jti (JWT ID).
  4. Configure time-based claims with easy-to-use date pickers. Quickly set when the token starts (nbf), was created (iat), and expires (exp); all times use UTC. The tool automatically translates your picks to UNIX timestamps.
  5. Click 'Generate JWT Token' to sign and create your token. Instantly, the JWT will appear below, ready for use in your project or API.
  6. Copy your JWT, header, payload, or public key as needed! Share the public key to let others verify the JWT’s authenticity in their apps or platforms.

Features & Technical Details

  • Algorithm Support: Pick from symmetric (HS*) or asymmetric (RS*, ES*, PS*) JWT algorithms. Symmetric uses a shared secret while asymmetric uses a public/private key pair. Always keep private keys secure.
  • Key Generation: Instantly create safe random secrets for HMAC tokens or secure key pairs for RSA/ECDSA—all done in your browser, never sent anywhere.
  • Instant Claim Templates: Add standard claims to your payload in a click. Claims like exp, nbf, and iat ensure your JWT has proper security controls.
  • Time Settings: Use built-in controls to set when tokens can be used and expire, helping to prevent replay attacks and secure token lifetimes.
  • Public Key Display: For asymmetric algorithms, get an easy copy of your public key for safe distribution and JWT verification by others.
  • Browser-Only Processing: All action happens locally in the browser. Your data and keys are never stored or uploaded—guaranteed privacy.
  • Security Best Practices: Never input real production keys in online tools. Always set token expirations, use strong unique secrets, and keep keys private.

Explore JWTs & Security Best Practices

Find in-depth guides and resources on JWT structure, security, and implementation using the following references: