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Fingerprint (FingerprintJS)

freemium From $0/mo · Founded 2020 · cloud + JS lib

Browser fingerprinting library + paid Pro API — free OSS core, paid plans from $99/mo.

Free tier: open-source FingerprintJS lib free; Pro starts at 20K identifications/mo paid

What it does well

  • Generous free tier includes the core open-source fingerprinting library for unlimited use.
  • Achieves high identification accuracy (claimed 99.5%) by combining many browser and device signals.
  • Provides a dedicated API for bot detection and identifying malicious traffic patterns.

Where it falls short

  • The free open-source library has lower accuracy than the paid Pro version.
  • Primarily an identification tool; not a full-stack security suite with WAF or DDoS mitigation.
  • Effectiveness can be reduced by sophisticated users with highly customized, privacy-hardened browsers.
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Tags: fingerprintbot-mitigationaccount-takeoverfree-tieropen-sourcesolosmall-teamenterpriseapi

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