How to use JWT Secret Key Generator
- Enter or paste your JWT into the input field to begin.
- Set Format, Bytes/length, Prefix so the output fits your use case.
- Select Regenerate and the result updates immediately, with no upload.
- When it looks right, Copy to save it.
About this tool
There is no server behind JWT Secret Key Generator. JWT Secret Key Generator splits and base64url-decodes a JWT locally so you can inspect its claims.
Signature verification that needs a secret should be done in a trusted environment; JWT Secret Key Generator focuses on decoding. It behaves the same on desktop and mobile, with nothing stored remotely.
Frequently asked questions
What does JWT Secret Key Generator do?
Use JWT Secret Key Generator to generate your input without installing anything using the Format, Bytes/length controls; everything happens client-side.
Do I need an account for JWT Secret Key Generator?
No — JWT Secret Key Generator needs no account, sign-up or installation.
Does JWT Secret Key Generator upload my data?
No — JWT Secret Key Generator processes everything locally in your browser, so nothing you enter is uploaded or stored.
Does JWT Secret Key Generator verify the JWT signature?
JWT Secret Key Generator decodes the token locally so you can inspect its header and payload; verification needs the matching key.
Does JWT Secret Key Generator work offline?
Once the page has loaded, JWT Secret Key Generator keeps working with no network connection.