Detect HeadJS
HeadJS is a JavaScript library that optimizes web performance by managing the loading and execution of scripts and stylesheets to ensure faster page loads and efficient resource handling.
01
Websites using HeadJS
5 hostnames in the PluginView corpus for this technology.
| Hostname | Last seen |
|---|---|
| pornhub.com | 8/3/2026 |
| clarity.fm | 8/4/2026 |
| hslu.ch | 8/5/2026 |
| slideonline.com | 8/5/2026 |
| useresponse.com | 8/5/2026 |
02
What a detection means
- Establishes
- One or more public signals on the scanned page matched a known HeadJS signature at the time of the scan.
- Does not establish
- A sitewide install of HeadJS, an active vendor contract, exclusive use, or that HeadJS is still in place today.
03
How to check a site for HeadJS
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest HeadJS signals.
- 2. PluginView reads only public responses and scores them against proprietary HeadJS fingerprints. Rule bodies and identifiers are not published.
- 3. Review the confidence score and text explanation for HeadJS on the results page.
04
FAQ: detecting HeadJS
- Can PluginView detect HeadJS without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for HeadJS. It does not bypass authentication or paywalls.
- What category is HeadJS?
- HeadJS is classified under JavaScript libraries, Performance in the PluginView directory.
- Does PluginView publish HeadJS 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.
