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FingerprintJS Pro vs UK Police

Same instrument, two spec sheets — measured, not claimed.

APIFingerprintJS ProNEW—UK PoliceNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedOpen Government Licence v3.0
Free tierFree tier — API key requiredFree — no key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

FingerprintJS Pro vs UK Police: common questions

Which is more reliable, FingerprintJS Pro or UK Police?

On our scheduled checks, UK Police leads on measured uptime — FingerprintJS Pro at —% versus UK Police at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do FingerprintJS Pro and UK Police need an API key?

UK Police needs no key, while FingerprintJS Pro requires a free API key. If you want to start calling without signup, reach for UK Police first.

Can I call FingerprintJS Pro and UK Police from the browser?

Yes — both FingerprintJS Pro and UK Police send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are FingerprintJS Pro and UK Police free for commercial use?

FingerprintJS Pro has unclear commercial terms, and UK Police allows commercial use on its free tier. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.