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FingerprintJS Pro vs VulDB

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

APIFingerprintJS ProNEW—VulDBNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

FingerprintJS Pro vs VulDB: common questions

Which is more reliable, FingerprintJS Pro or VulDB?

On our scheduled checks, VulDB leads on measured uptime — FingerprintJS Pro at —% versus VulDB 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 VulDB need an API key?

Both ask you to authenticate — FingerprintJS Pro uses an API key and VulDB uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call FingerprintJS Pro and VulDB from the browser?

Yes — both FingerprintJS Pro and VulDB 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 VulDB free for commercial use?

FingerprintJS Pro has unclear commercial terms, and VulDB has unclear commercial terms. 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.