Browser Fingerprint Test
See how trackable your browser is. We compute your canvas, WebGL, font and device fingerprint locally and rate how easily sites can recognise you.
Check your browser fingerprint
We read the signals your browser exposes to every website and combine them into one identifier.
How browser fingerprinting works
Every time you load a page, your browser quietly hands over dozens of technical details so the site can render correctly: your screen resolution, time zone, installed fonts, language, graphics hardware and more. Individually these are unremarkable. Stitched together, they form a pattern that is frequently unique — a fingerprint that identifies you without a single cookie.
Two techniques do most of the heavy lifting. Canvas fingerprinting asks your browser to draw a hidden image; minute differences in your GPU and drivers make the output subtly yours. WebGL readouts expose your exact graphics renderer. Add your font list and device specs and a tracker rarely needs anything else to follow you between sites — which is why clearing cookies or opening a private window changes so little.
How to read your trackability score
We count how many high-entropy signals your browser reveals and turn that into a simple rating. It is a heuristic, not a guarantee, but it tells you roughly how much you stand out.
| Rating | What it means |
|---|---|
| Low | Few distinctive signals — you blend in with many other devices. |
| Medium | Several identifying signals — you're recognisable, with some effort. |
| High | A rich, distinctive profile — sites can likely single you out at a glance. |
How to use this test
- 1. Press Analyze my browser to compute your fingerprint ID.
- 2. Note the rating and the signals that make you distinctive.
- 3. Try a privacy browser or extension, then re-run to see the ID change.
- 4. Mask your network layer too with the WebRTC leak test and VPN test.
Frequently asked questions
What is a browser fingerprint? +
A fingerprint is the combination of details your browser reveals to every site — screen size, time zone, fonts, graphics card, language and how your device renders a hidden image. On their own these are common; combined, they are often unique enough to recognise you across visits without any cookie.
Is fingerprinting the same as cookies? +
No. Cookies are stored on your device and you can delete them. A fingerprint is built from properties your browser already exposes, so clearing cookies or using private mode does little to change it. That is what makes it harder to escape.
Why is my canvas hash unique? +
Canvas fingerprinting draws text and shapes off-screen and reads back the pixels. Tiny differences in your GPU, drivers, fonts and operating system make the result subtly different from most other devices — which is precisely why trackers like it.
Can I lower my trackability? +
Yes, partly. A privacy-focused browser that randomises or blocks canvas and WebGL readouts, disabling extra fonts, and a VPN to mask your IP all reduce how easily you are singled out. No setup is perfectly anonymous, but you can move from very distinctive to fairly common.
Does this test send my data anywhere? +
No. Every signal is read and hashed locally in your browser. Nothing about your device leaves the page.
Want to be harder to track? Here's what helps
Your fingerprint identifies the browser; your IP address identifies the network. Reducing both matters. A privacy browser that randomises canvas and WebGL output blunts the fingerprint, while a VPN hides the IP and location attached to it. Antivirus and security suites that include anti-tracking and a VPN can cover the whole surface from one place if you'd rather not juggle several tools.
Some links on this site are affiliate links — we may earn a commission, at no extra cost to you. It never changes our verdicts or what the test reports.