Developer

JWT Key Generator

Generate random keys locally in browser.

100% browser-only

Tool Workspace

Options

Result

Generated key is not stored and only exists while this page is open.

Privacy Notice：Your files are processed locally. They are never uploaded.

How it works

  1. Choose key length in bytes.
  2. Generate random key using Web Crypto API.
  3. Copy key for local testing usage.
Advertisement (tool-result)

FAQ

Can this key be used for JWT signing?

Yes, as long as signing and verification share the same secret format.

Can data be uploaded?

No, key generation happens in-browser and no request is sent.