Browser Fingerprint Audit See What Your Browser Reveals Online

Even with cookies blocked, a website can often recognise your browser when you return. The trick is fingerprinting: combining dozens of small details your browser reveals into a profile that is surprisingly distinctive. This browser fingerprint audit shows you your own fingerprint — the signals your browser is handing out right now — and highlights where your setup may be giving away more identifying information than you realise. It is built for privacy-conscious users, testers and anyone curious about how trackable they really are.

What a Browser Fingerprint Is

No single detail identifies you; the combination does. When your browser loads a page it exposes its user agent string (browser and operating system versions), screen size and colour depth, installed fonts, language settings, timezone, and how it renders graphics through technologies such as canvas and WebGL. Each rendering task is carried out slightly differently depending on your hardware, drivers and software, so the outputs act like a soft signature. Add enough of these signals together and a browser can become very unusual indeed. Unlike cookies, a fingerprint is not stored on your device, so there is nothing to delete — the information is recomputed from your configuration on every visit. Curious how one of the biggest signals reads on its own? The What's My Browser tool breaks down your user agent in plain language.

What the Fingerprint Audit Shows You

• The identifying attributes your current browser and device expose, gathered in one report.
• Which of those attributes look unusual or especially distinctive compared with a typical setup.
• A repeatable check: run it again after changing settings or switching browsers to see whether your profile became less unique.

The audit only sees the browser you run it from, so it doubles as a comparison tool across the devices you use. One specific leak channel that fingerprint-minded users usually review at the same time is checked separately by the WebRTC Leak Test.

How to Run a Browser Fingerprint Audit

1. Open this page in the browser and on the device you want to examine — the audit only sees the setup you run it from.
2. Click Run Fingerprint Audit and let it collect the signals your browser exposes.
3. Review each reported attribute and note which ones look unusual or especially distinctive.
4. Weigh up the overall picture: the more your combination differs from a typical setup, the easier you are to single out.
5. If you change settings or switch browsers, run the audit again to compare. The What's My IP tool shows the network side of what sites see, which your VPN does affect — unlike the fingerprint itself.

Reading Your Results: Signs of a Distinctive Setup

The audit is most useful when you know what to look for. A timezone or language that contradicts your apparent location stands out and can quietly undermine a VPN. A long, rare font list — often the side effect of design or office software — adds a lot of uniqueness for little benefit. Unusual screen dimensions, such as a half-maximised window on a large monitor, are more distinctive than the standard resolutions most people use. An outdated browser version is doubly bad: more identifiable and less secure. And remember that a VPN changes only your network address; it does nothing to alter the fingerprint itself, so the two checks answer different questions.

Reducing How Much Your Browser Stands Out

You cannot make a browser reveal nothing, but you can blend in. Keep your browser up to date and close to its default settings, since defaults are what most people share. Be cautious with exotic extensions and customisations that few others have. Some browsers offer built-in fingerprinting resistance that standardises or randomises reported values; enabling it helps most when you also avoid tweaking everything else. Resist the urge to spoof values carelessly — a fingerprint full of contradictions (a claimed location in one country, a timezone and language from another) is more memorable, not less. It is also worth auditing every setup you use: your phone, your work laptop and your home browser each present a different fingerprint, and the one you browse most casually is often the most distinctive of the three.

Browser Fingerprinting Questions

How is fingerprinting different from cookies?

Cookies are files a site stores on your device, which you can delete or block. A fingerprint is calculated fresh from the characteristics of your browser and device each time a page loads, so it works even in private browsing modes and with cookies disabled.

Does using a VPN or a private window stop fingerprinting?

No. A VPN hides your IP address but leaves your browser's characteristics untouched, and a private window mainly isolates stored data such as history and cookies. Your screen size, fonts, timezone and rendering behaviour are still there to be measured.

Why do websites fingerprint browsers at all?

There are legitimate uses — fraud prevention, stopping account takeovers and remembering security preferences. The same techniques are also used for analytics and advertising tracking, which is why privacy tools and browser makers have been working to limit how much a fingerprint can reveal.

Can I delete or reset my fingerprint?

There is nothing stored to delete: the fingerprint is recomputed from your browser's configuration on every visit. What you can change is the configuration itself — updates, default settings and fewer unusual fonts or extensions all make the combination less distinctive.

Is a unique fingerprint the same as being identified by name?

No. A fingerprint singles out a browser, not a person — it carries no name or address by itself. It becomes identifying when it is combined with other information, such as logging into an account from that same browser.

Know Your Signals Before Websites Do

You cannot browse the modern web invisibly, but you can browse it knowingly. Running this audit shows you the signals your setup broadcasts and which changes actually help it blend in. Revisit the audit after changing browsers or settings, and let evidence rather than guesswork guide your privacy choices.