Browser identity, readable Live detection, QA-ready generators, parsing help, and extension verification in one place.
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User agent intelligence toolkit

See what your browser really sends.

RandomUserAgents.com helps QA teams, browser extension users, support engineers, and analytics teams inspect live user agents, generate representative samples, and explain what each token actually means.

Check my user agent Generate sample strings Verify the extension
No signup required Built for debugging and QA Fast browser-side checks

Core toolkit

Everything visitors usually need in one pass

The site keeps its focused static setup, but the homepage now behaves like a product landing page with clear entry points into the main workflows.

Live user agent checker

Inspect the browser-side value exposed by navigator.userAgent, copy it into bug reports, and refresh instantly after extension changes.

  • Current session value
  • Readable browser and OS breakdown
  • Useful for screenshots and support reports

Open checker

Bulk generator for QA

Create realistic sample strings from browser templates for parser tests, fixtures, allowlist demos, and documentation examples.

  • Desktop, mobile, and tablet profiles
  • Chrome, Firefox, Safari, and Edge samples
  • Copy, TXT, and CSV export

Generate samples

Readable parsing guide

Translate tokens like Mozilla/5.0, AppleWebKit, Gecko, and Edg/ into something teammates can actually use.

  • Common token patterns explained
  • Compatibility quirks and caveats
  • Client Hints context for modern browsers

Read the guide

Extension verification loop

Install the extension, switch profiles there, and come back to the checker to confirm what your page session now exposes.

  • Practical post-install workflow
  • Clear limits of browser-side switching
  • Fast sanity check after each change

See extension details

What you can verify quickly

Useful signals, without pretending they are perfect identity data

The site is intentionally opinionated: user agents are great for diagnostics and test coverage, but weak as a security truth source.

Browser Family and approximate version clues for Chrome, Safari, Firefox, Edge, and similar browsers.
OS Windows, macOS, Android, iOS, Linux, and ChromeOS hints when the string exposes them clearly.
Device Desktop, mobile, and tablet patterns for fast reproduction and layout testing.
Limits Spoofing, reduction, Client Hints, and compatibility tokens that make naive parsing fragile.

Typical workflow

How teams use the site in practice

The most common job is not heavy browser intelligence. It is a fast answer: what was sent, what it probably means, and how to reproduce it.

QA, support, and debugging

  • Capture the exact string the browser exposes before reproducing a browser-specific bug.
  • Compare live output with generated fixtures so parser tests and manual checks stay aligned.
  • Confirm whether a user-agent switching extension changed the visible browser-side value.
  • Share a readable breakdown with non-technical teammates instead of raw tokens only.

Suggested run order

  1. Open the checker and capture the current browser-side user agent.
  2. Review the parsed browser, engine, OS, and device hints for obvious mismatches.
  3. Generate representative samples when you need broader parser or analytics coverage.
  4. Use the guide or extension page when the issue depends on compatibility tokens or spoofing.

Signal map

What matters most when reading a raw string

These are the patterns the site helps visitors identify quickly before they dive into parser code or analytics rules.

Browser family markers

Look for tokens like Chrome/, Firefox/, Version/, Safari/, and Edg/ before you trust any headline label.

Rendering engine clues

Blink, WebKit, Gecko, and older compatibility tails can explain why one browser string seems to impersonate another.

Platform inference

Desktop versus mobile versus tablet often comes from combinations of tokens, not from one perfect field.

Reliability boundaries

Modern privacy changes reduce detail deliberately. That is why the site frames user agents as useful hints, not secure identity signals.

FAQ

Questions visitors usually ask first

Short answers for the main expectations and limitations around browser user agents.

Can a user agent string be trusted as proof of identity?

No. It is useful for diagnostics and compatibility checks, but it can be spoofed, normalized, or reduced by browser privacy changes.

Why does one browser sometimes include tokens from another browser?

Compatibility markers are common. Chromium browsers, for example, often carry Safari-style tokens even when the real browser identity is clarified later in the string.

Should generated user agents be used for production security rules?

No. Generated lists are best for QA, parser tests, demos, fixtures, and documentation. They are not a substitute for real telemetry or layered detection.

How do I verify that the extension actually changed my user agent?

Install or update the extension, switch the profile there, then refresh the checker page on this site. The live browser-side string shown there should change.