Detect Howler.js

JavaScript libraries

Howler.js is an audio library with support for the Web Audio API and a fallback mechanism for HTML5 Audio.

Detection looks at script sources, javascript globals across 4 fingerprint rules among the site's public responses.

01

Websites using Howler.js

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02

Signal classes

PluginView evaluates public page signals in these classes when identifying Howler.js. Individual fingerprint rule bodies are proprietary and are not published.

  • Script sources
  • JavaScript globals
03

Example public indicators for Howler.js

Illustrative indicators derived from public catalog metadata for Howler.js. A live scan may match additional proprietary rules beyond these examples.

  • howler@/dist/howler.min.js
  • howler//howler.core?.min.js
  • Howler
  • HowlerGlobal
04

What a detection means

Establishes
One or more public signals on the scanned page matched a known Howler.js signature (4 rules) at the time of the scan.
Does not establish
A sitewide install of Howler.js, an active vendor contract, exclusive use, or that Howler.js is still in place today.
05

How to check a site for Howler.js

  1. 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Howler.js signals.
  2. 2. PluginView reads only public responses (script sources, javascript globals) and scores them against the Howler.js signature set (4 rules).
  3. 3. Review the confidence score and text explanation for Howler.js on the results page.
06

FAQ: detecting Howler.js

Can PluginView detect Howler.js without logging in?
Yes. PluginView only reads publicly accessible responses when checking for Howler.js — typically script sources, javascript globals. It does not bypass authentication or paywalls.
What category is Howler.js?
Howler.js is classified under JavaScript libraries in the PluginView directory.
How many fingerprint rules cover Howler.js?
This reference currently tracks 4 fingerprint rules across script sources, javascript globals. Individual rule bodies are proprietary and are not published.
What public signals suggest a site uses Howler.js?
Illustrative public indicators for Howler.js include howler@/dist/howler.min.js; howler//howler.core?.min.js; Howler. A live scan may match additional proprietary rules beyond these examples.

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