Browser Fingerprint Test
This browser fingerprint test reads the signals your browser exposes to any webs
This browser fingerprint test reads the signals your browser exposes to any webs
How to use Browser Fingerprint Test
- Open the page and let it read your browser signals automatically.
- Review your fingerprint ID and the full list of collected signals below it.
- Reload or open a different browser to see whether the ID stays the same, then copy the full report if you want to save it.
About Browser Fingerprint Test
This browser fingerprint test reads the signals your browser exposes to any website you visit and combines them into a single fingerprint ID. It collects your user agent, platform, screen resolution and color depth, timezone, CPU cores, reported device memory, installed fonts, GPU vendor and renderer (via WebGL), and a canvas rendering hash. Those values are joined together and run through SHA-256 to produce the ID shown at the top.
The point is to show how sites can recognize a browser without cookies. If you reload the page and the ID stays the same, those signals are stable enough to track you across visits. Open the tool in a different browser, or in a private window with extensions disabled, and you will usually see the ID change, which demonstrates how the combination of small details adds up to something identifiable.
Everything runs locally: the signals are gathered with standard browser APIs and the hashing happens in your browser using WebCrypto. Nothing is uploaded, nothing is stored, and there is no account. Note that this is an educational estimate, not a formal uniqueness score, and results depend on your specific hardware, OS, privacy settings and any anti-fingerprinting features your browser or extensions apply.
Frequently asked questions
- What is a browser fingerprint?
- A browser fingerprint is a set of details your browser reveals to websites, such as your user agent, screen size, timezone, fonts, and GPU. On their own each detail is common, but combined they can be distinctive enough to recognize your browser without cookies. This tool collects those details and hashes them into one ID.
- Is my data uploaded or stored anywhere?
- No. All signals are read with standard browser APIs and the fingerprint ID is computed in your browser using WebCrypto. No data is sent to a server, nothing is saved, and there is no sign-up. You can confirm this by running it offline.
- How accurate is the fingerprint ID?
- The ID is a faithful hash of the signals your browser exposes right now, so it is exact for those inputs. It is not a formal uniqueness percentage against the whole internet, and some values (like GPU details or fonts) can vary by device, OS, and privacy settings, so treat it as an educational estimate.
- Why does my fingerprint change between browsers or private mode?
- Different browsers report different user agents, fonts, and canvas or WebGL output, and private or hardened modes often block or randomize some of those signals. Because the ID depends on all of them, any change flips the hash to a new value.
- How can I make my browser harder to fingerprint?
- Use a browser with built-in anti-fingerprinting (such as strict privacy modes), keep it up to date, limit extensions that add unusual signals, and consider blocking canvas or WebGL readouts. No single change makes you anonymous, but reducing unusual signals lowers how much you stand out.
- What signals does this test check?
- It checks user agent, platform, languages, screen and available resolution, color depth, device pixel ratio, timezone and offset, CPU cores, reported device memory, touch points, cookie and Do Not Track status, WebGL GPU vendor and renderer, a canvas rendering hash, and the list of detected fonts.