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Browser fingerprint test

See which browser signals agree, which contradict each other, and what to review first. The test compares independent subsystems instead of judging whether your device merely looks common.

How the test worksBrowse all 271 checks

Checks last updated

Audit this browser's fingerprint

Runs the full suite, summarizes what needs attention, and keeps every raw measurement available for inspection.

Optional: measure how this browser handles input

0 of 5 done · adds 18 checks

Skip and run now if you like — the 18 checks are then reported as not attempted, never as passed.

  1. Click the three markers
  2. Type audit
  3. Drag the slider past 80
    0
  4. Press and hold for 1.2s
  5. Your input device
Why these five, and what is recorded›

Clicks. A click you make is trusted; one a driver injects around the input pipeline is not.

Typing. A keypress is the default action of a keydown. Some drivers send only the character, leaving a keypress with nothing behind it.

The slider. A drag is the one interaction that produces a stream of values rather than a single jump, and the only thing here that asks the pointer to travel while a button is held.

The hold. A click is over in milliseconds; a hold has to stay a press for over a second, and every pointer move inside it must still report the button as down.

Your device. Genuinely useful context — a trackpad and a mouse produce different movement, and touch produces none of it. Any answer works.

Recorded: counters and HTML tag names. No key, no code, no character, and not the text you typed — the word above is a constant, so it says nothing about you.

18 input checks will be reported as not attempted.

Understand your result

The audit stays focused on your browser. Its long-form documentation lives in dedicated, linkable references.

Fingerprint check reference

Every check, grouped by browser subsystem, with the expected result and resolution.

Read reference

Methodology, scoring & limits

How coherence is measured, which evidence is scored, and what a public page cannot prove.

Read reference

Detection research & sources

The public detector artifacts and research behind the audit's signal attributions.

Read reference

Data notice: Running this test saves your fingerprint to our database for internal research. It is detailed enough to identify you, so it is not anonymous. We never publish, sell or share it, and you can erase it at any time. How this data is used