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User-Agent Example Generator

Generates an illustrative example User-Agent string in the standard public format — for populating test data or documentation. These are constructed examples, never captured from, or representative of, any real visitor or device.

What this generator does

Produces an illustrative User-Agent string in the standard format, for testing parsers and filling documentation. Every string is constructed rather than captured, which matters: a real User-Agent is a fingerprint of a real person's device, and pasting one into a public document is a small privacy leak.

What you'll get

This generator draws from a hand-checked list of 8 entries. Here is a spread of 6 of them, so you can see the style before you generate:

  • Mozilla/5.0 (Windows NT 10.0; Win64; x64) ExampleBrowser/120.0
  • Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15) ExampleBrowser/120.0
  • Mozilla/5.0 (X11; Linux x86_64) ExampleBrowser/120.0
  • Mozilla/5.0 (Android 14; Mobile) ExampleMobile/120.0
  • Mozilla/5.0 (iPad; CPU OS 17_0 like Mac OS X) ExampleMobile/17.0
  • ExampleBot/1.0 (+https://example.com/bot)

A fixed sample of the list, not a live draw — your own results are picked at random from all 8, without repeating until the list runs out. Original HEKNO-curated illustrative example user-agent strings, in the standard public format. Last reviewed 2026-09-01.

How to use this tool

  1. Press generate for a User-Agent example.
  2. Generate again for another one.

Common use cases

  • Test data for request-parsing code
  • Documentation examples
  • Teaching User-Agent string structure

Limitations and good to know

  • These are constructed examples, not strings from any real visitor to this site, and they will not correspond exactly to any shipped browser build.
  • User-Agent strings are unreliable for feature detection and are being actively reduced by browsers. Use them for parser tests and logging examples, not for deciding what a client supports.

Entries are chosen with your browser's cryptographic random number generator, so every entry on the list is equally likely. How Generate Random works.

Constructed illustrative examples only — never captured from, or representative of, any real visitor or device.

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