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AmIUnique

Fingerprints your browser and compares it against a research dataset of hundreds of thousands of others. The verdict is usually: unique.

Opens in a new tab. We do not control this site and it may have changed since we catalogued it.

How to get the most from it

AmIUnique sits in Privacy & Security under Learn, filed as a minute.

  • Give it one round. There is nothing to finish and nothing lost by leaving.
  • Use a laptop or desktop computer — we file it as desktop only.
  • It works with the sound off, so it is fine on a train or in a quiet office.
  • No account needed — you can start without signing up.
  • Go in expecting something brainy and unsettling.

About this category: Breach checkers, fingerprint tests, throwaway inboxes and plain-English readings of terms of service. Mildly alarming, entirely free.

Good for

  • A one-round break between tasks
  • Giving your brain a workout
  • A little creeping unease
  • A quiet break at your desk
  • Trying it with zero commitment

AmIUnique: quick answers

Is AmIUnique free?

Yes. AmIUnique is free to use and needs no account.

Do I need an account to use AmIUnique?

No. You can use AmIUnique without signing up for anything.

Does AmIUnique work on a phone?

Not well. We file AmIUnique as desktop only, so open it on a laptop or desktop computer.

Is AmIUnique safe for work?

Yes, we file it as safe for work. It also works muted.

How long does AmIUnique take?

We file it as "A minute": One quick round, then you can leave.

More in Privacy & Security

All 18 in Privacy & Security
  • A search engine built on its own independent index with no profiling of searchers, and filters that let anyone re-rank results by their own rules.

  • One page per leak channel — WebGL, canvas, WebRTC, DNS — each showing precisely what your browser hands over without being asked.

  • The EFF's test showing how uniquely identifiable your browser is from fonts, plugins and screen size alone. Most people are one in millions.

  • Runs a standard or extended check to reveal which servers actually saw your DNS lookups. The quickest way to catch a VPN not doing its job.

Same mood: brainy

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  • Obsessively detailed database going down to individual episode credits and file hashes. Built for cataloguers, not for browsing.

    • 10 min
    • Desktop
  • Industry news since 1998, plus an encyclopedia with staff and voice credits that nothing else in the space matches.

  • The spaced repetition flashcard system serious learners settle on, with shared decks for nearly every subject.

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