Data as of Jul 25, 2026 · Based on 2,718,867 AI responses across 9,511 prompts · See how Parse measures this
ThumbmarkJS is an open-source browser identification tool that generates 32-character fingerprints for visitor tracking across sessions. It offers GDPR-compliant, enterprise-ready visitor identification with bot and VPN detection, serving over 60,000 websites with 6 billion monthly thumbmarks.
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