Tip: Press Ctrl/Cmd + Enter to sign. Header is set automatically to {"alg":…,"typ":"JWT"}. Signing happens in your browser via Web Crypto — your secret never leaves your device. Use HMAC secrets for testing only.
📖 What is JWT Generator?
JWT Generator is a free online tool that helps you build and sign a json web token with hs256, hs384, or hs512 and your secret, in your browser. No signup, no downloads — everything runs securely in your browser.
👤 Who Is It For?
For: Developers, DevOps engineers, security pros.
Not for: Enterprise batch processing or offline use.
📋 How to Use
- Enter your input.
- Click the action button.
- Copy or download the result.
💡 Common Use Cases
- Build and sign a JSON Web Token with HS256, HS384, or HS512 and your secret, in your browser
- Quick JWT Generator tasks during daily work
- Encoders workflows without installing software
⚠️ Limitations
Browser-based — all processing is client-side. Large payloads may be slow.
📌 Key Facts
- JWT Generator is a free tool for developers.
- All processing runs in your browser — no data is uploaded to any server.
- No signup required for core functionality.
- Part of the ToolPile collection of 40+ free tools.