Is my input uploaded?

No. This website tool runs in your browser. Only the optional public API version sends input to the authenticated API route.

Can I use this in an application?

Yes. The Developers documentation lists the authenticated endpoint, request parameters and response example.

Should I verify the result?

Yes. Deterministic tools are designed for repeatable results, but format-specific or heuristic output should still be checked for your use case.

Developer Tools

User-Agent Generator

Generate a plausible desktop or mobile User-Agent string from a browser, operating system and version.

Free foreverRuns in your browserNo sign-up

BrowserOperating systemBrowser version

Result

Enter your values and select generate user-agent.

About the User-Agent Generator

User-Agent Generator is a focused browser-based utility. Generate a plausible desktop or mobile User-Agent string from a browser, operating system and version.

The calculation runs locally in your browser, so the supplied value is not uploaded to ToolsOnDuty. The same capability is also available through the authenticated developer API.

Key features

Fast local processing with explicit validation
Copy-ready structured result
No account, upload or paid data provider required

How to use

1Enter a browser, operating system and version.
2Choose any available conversion or formatting options.
3Run the tool and review a generated User-Agent string.

Examples

User-Agent Generator example

Input: a browser, operating system and version

Output: a generated User-Agent string

Frequently asked questions

Is my input uploaded?: No. This website tool runs in your browser. Only the optional public API version sends input to the authenticated API route.
Can I use this in an application?: Yes. The Developers documentation lists the authenticated endpoint, request parameters and response example.
Should I verify the result?: Yes. Deterministic tools are designed for repeatable results, but format-specific or heuristic output should still be checked for your use case.