Detect YUI
YUI is a JavaScript and CSS library with more than 30 unique components including low-level DOM utilities and high-level user-interface widgets.
Detection looks at script sources, javascript globals across 3 fingerprint rules among the site's public responses.
01
Websites using YUI
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02
Signal classes
PluginView evaluates public page signals in these classes when identifying YUI. Individual fingerprint rule bodies are proprietary and are not published.
- Script sources
- JavaScript globals
03
Example public indicators for YUI
Illustrative indicators derived from public catalog metadata for YUI. A live scan may match additional proprietary rules beyond these examples.
- yui/yui.yahooapis.com
- YAHOO.VERSION: .
- YUI.version: .
04
What a detection means
- Establishes
- One or more public signals on the scanned page matched a known YUI signature (3 rules) at the time of the scan.
- Does not establish
- A sitewide install of YUI, an active vendor contract, exclusive use, or that YUI is still in place today.
05
How to check a site for YUI
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest YUI signals.
- 2. PluginView reads only public responses (script sources, javascript globals) and scores them against the YUI signature set (3 rules).
- 3. Review the confidence score and text explanation for YUI on the results page.
06
FAQ: detecting YUI
- Can PluginView detect YUI without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for YUI — typically script sources, javascript globals. It does not bypass authentication or paywalls.
- What category is YUI?
- YUI is classified under JavaScript libraries in the PluginView directory.
- How many fingerprint rules cover YUI?
- This reference currently tracks 3 fingerprint rules across script sources, javascript globals. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses YUI?
- Illustrative public indicators for YUI include yui/yui.yahooapis.com; YAHOO.VERSION: .; YUI.version: .. A live scan may match additional proprietary rules beyond these examples.
