Detect Boomerang
boomerang is a JavaScript library that measures the page load time experienced by real users, commonly called RUM (Real User Measurement).
Detection looks at javascript globals across 3 fingerprint rules among the site's public responses.
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Websites using Boomerang
Loading website list…
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Signal classes
PluginView evaluates public page signals in these classes when identifying Boomerang. Individual fingerprint rule bodies are proprietary and are not published.
- JavaScript globals
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Example public indicators for Boomerang
Illustrative indicators derived from public catalog metadata for Boomerang. A live scan may match additional proprietary rules beyond these examples.
- BOOMR
- BOOMR_lstart
- BOOMR_mq
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What a detection means
- Establishes
- One or more public signals on the scanned page matched a known Boomerang signature (3 rules) at the time of the scan.
- Does not establish
- A sitewide install of Boomerang, an active vendor contract, exclusive use, or that Boomerang is still in place today.
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How to check a site for Boomerang
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Boomerang signals.
- 2. PluginView reads only public responses (javascript globals) and scores them against the Boomerang signature set (3 rules).
- 3. Review the confidence score and text explanation for Boomerang on the results page.
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FAQ: detecting Boomerang
- Can PluginView detect Boomerang without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for Boomerang — typically javascript globals. It does not bypass authentication or paywalls.
- What category is Boomerang?
- Boomerang is classified under JavaScript libraries, RUM in the PluginView directory.
- How many fingerprint rules cover Boomerang?
- This reference currently tracks 3 fingerprint rules across javascript globals. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses Boomerang?
- Illustrative public indicators for Boomerang include BOOMR; BOOMR_lstart; BOOMR_mq. A live scan may match additional proprietary rules beyond these examples.
