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JWT Generator

Quickly generate and sign JWT tokens with HS algorithms and custom payloads.

JWT Generator

Generated JWT

About This Tool

The JWT Generator is an essential tool for developers to debug and test token generation. It allows you to configure Header and Payload JSON via a visual interface and choose from HMAC algorithms like HS256, HS384, or HS512. Once a secret is provided, the tool uses the browser's native Web Crypto API to compute the signature and generate the full token instantly. You can inspect the Base64URL encoding of each segment (Header, Payload, Signature) separately. All processing is local, ensuring your secrets never leave your device.

Features

  • ⚡ Real-time: Token updates instantly as you type or change algorithms
  • 🛡️ Alg Support: Full support for HS256, HS384, HS512 and none mode
  • 🧩 Structured Editing: JSON editors for Header and Payload
  • 📊 Segment Preview: View Base64URL encoding for Header, Payload, and Signature
  • 📋 Easy Copy: One-click copy for the full token or individual segments
  • 🔒 Privacy First: 100% local processing via Web Crypto API

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