Free Online Tools

How To Use JWT Generator

1

Enter your payload

Type a valid JSON object as the token payload.

2

Set a secret key

Provide the key used to sign the token.

3

Generate the token

Get a signed JWT ready to use.

Frequently Asked Questions

1. Is my secret key stored anywhere?

No, the secret is used only to sign the token for this single request and is never saved or logged.

2. What signing algorithm is used?

Tokens are signed using HS256 (HMAC with SHA-256), the most common algorithm for symmetric-key JWT signing.

3. What format should expiresIn use?

Use a duration string like "1h" for one hour, "7d" for seven days, or "30m" for thirty minutes.

4. Should I use this for production secrets?

This tool is intended for testing and development. Avoid pasting real production secret keys into any third-party tool.

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