Developer
JWT Generator
- Browser-based
- No signup
Generate JWTs with subject, issuer, audience, issued-at, and expiry claims. Optionally sign with HS256 using a secret you provide.
100% Client-Side
Your data never leaves your computer.
How to use this tool
1. Paste source text, code, or data into the JWT Generator input panel. 2. Choose transform or validation options shown for JWT Generator. 3. Run JWT Generator or read automatic output. 4. Review errors or diff output carefully. 5. Copy the transformed result. Processing runs in your browser; inputs are not uploaded to our server.
Worked example
Example: paste a small sample input into JWT Generator, run the transform or validation, and compare the output with the before text—fix any syntax errors reported before copying.
How it works
Fill in standard JWT claims (subject, issuer, audience, expiry) and a signing secret to generate an HS256 token. Generation uses Web Crypto in your browser; secrets are not sent to a server.
Limitations
Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.
Privacy and file handling
Your data is processed in your browser and is not uploaded to our server.
Frequently asked questions
Is the JWT Generator free to use?
Yes. Utilnivo tools are free to use and do not require an account.
Are my inputs stored?
Utilnivo does not require an account. See the privacy note on this page for how your data is processed for this tool.
How do I get started with JWT Generator?
Open the tool on this page, enter your inputs, and use the on-screen controls. No account is required.
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