Can PluginView detect CatchJS without logging in?

Yes. PluginView only reads publicly accessible responses when checking for CatchJS. It does not bypass authentication or paywalls.

What category is CatchJS?

CatchJS is classified under Analytics in the PluginView directory.

Does PluginView publish CatchJS fingerprint rules?

No. Detection uses proprietary fingerprint rules that are not published. Scan results explain matches in plain language without disclosing rule bodies or identifiers.

Detect CatchJS

Analytics

CatchJS is a JavaScript error-logging tool that captures runtime errors and generates detailed reports for diagnostic analysis.

Websites using CatchJS

No websites in the corpus for this technology yet.

What a detection means

Establishes: One or more public signals on the scanned page matched a known CatchJS signature at the time of the scan.
Does not establish: A sitewide install of CatchJS, an active vendor contract, exclusive use, or that CatchJS is still in place today.

How to check a site for CatchJS

1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest CatchJS signals.
2. PluginView reads only public responses and scores them against proprietary CatchJS fingerprints. Rule bodies and identifiers are not published.
3. Review the confidence score and text explanation for CatchJS on the results page.

FAQ: detecting CatchJS

Can PluginView detect CatchJS without logging in?: Yes. PluginView only reads publicly accessible responses when checking for CatchJS. It does not bypass authentication or paywalls.
What category is CatchJS?: CatchJS is classified under Analytics in the PluginView directory.
Does PluginView publish CatchJS fingerprint rules?: No. Detection uses proprietary fingerprint rules that are not published. Scan results explain matches in plain language without disclosing rule bodies or identifiers.