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FingerprintJS Pro vs URLScan.io

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

APIFingerprintJS ProNEW—URLScan.ioNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublished30 req/window · 29 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

FingerprintJS Pro vs URLScan.io: common questions

Which is more reliable, FingerprintJS Pro or URLScan.io?

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

Both ask you to authenticate — FingerprintJS Pro uses an API key and URLScan.io 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 URLScan.io from the browser?

Only FingerprintJS Pro is browser-friendly — it returns CORS headers over HTTPS. URLScan.io needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are FingerprintJS Pro and URLScan.io free for commercial use?

FingerprintJS Pro has unclear commercial terms, and URLScan.io 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.