Detect FingerprintJS
FingerprintJS is a browser fingerprinting library that queries browser attributes and computes a hashed visitor identifier from them.
Detection looks at script sources, javascript globals across 6 fingerprint rules among the site's public responses.
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Websites using FingerprintJS
Loading website list…
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Signal classes
PluginView evaluates public page signals in these classes when identifying FingerprintJS. Individual fingerprint rule bodies are proprietary and are not published.
- Script sources
- JavaScript globals
03
Example public indicators for FingerprintJS
Illustrative indicators derived from public catalog metadata for FingerprintJS. A live scan may match additional proprietary rules beyond these examples.
- fingerprint/fp?0?.min?.js
- fingerprintjs\-pro2?@/0.*??/
- Fingerprint: 0?
- Fingerprint2
- Fingerprint2.VERSION: .
- FingerprintJS
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What a detection means
- Establishes
- One or more public signals on the scanned page matched a known FingerprintJS signature (6 rules) at the time of the scan.
- Does not establish
- A sitewide install of FingerprintJS, an active vendor contract, exclusive use, or that FingerprintJS is still in place today.
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How to check a site for FingerprintJS
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest FingerprintJS signals.
- 2. PluginView reads only public responses (script sources, javascript globals) and scores them against the FingerprintJS signature set (6 rules).
- 3. Review the confidence score and text explanation for FingerprintJS on the results page.
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FAQ: detecting FingerprintJS
- Can PluginView detect FingerprintJS without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for FingerprintJS — typically script sources, javascript globals. It does not bypass authentication or paywalls.
- What category is FingerprintJS?
- FingerprintJS is classified under JavaScript libraries, Browser fingerprinting in the PluginView directory.
- How many fingerprint rules cover FingerprintJS?
- This reference currently tracks 6 fingerprint rules across script sources, javascript globals. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses FingerprintJS?
- Illustrative public indicators for FingerprintJS include fingerprint/fp?0?.min?.js; fingerprintjs\-pro2?@/0.*??/; Fingerprint: 0?. A live scan may match additional proprietary rules beyond these examples.
