Detect Retina.js
Retina.js is an open-source script designed to facilitate the delivery of high-resolution images to devices with retina displays.
Detection looks at script sources, javascript globals across 3 fingerprint rules among the site's public responses.
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Websites using Retina.js
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Signal classes
PluginView evaluates public page signals in these classes when identifying Retina.js. Individual fingerprint rule bodies are proprietary and are not published.
- Script sources
- JavaScript globals
03
Example public indicators for Retina.js
Illustrative indicators derived from public catalog metadata for Retina.js. A live scan may match additional proprietary rules beyond these examples.
- js/retina.min?.js?ver=
- RetinaImage
- retinajs
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What a detection means
- Establishes
- One or more public signals on the scanned page matched a known Retina.js signature (3 rules) at the time of the scan.
- Does not establish
- A sitewide install of Retina.js, an active vendor contract, exclusive use, or that Retina.js is still in place today.
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How to check a site for Retina.js
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Retina.js signals.
- 2. PluginView reads only public responses (script sources, javascript globals) and scores them against the Retina.js signature set (3 rules).
- 3. Review the confidence score and text explanation for Retina.js on the results page.
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FAQ: detecting Retina.js
- Can PluginView detect Retina.js without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for Retina.js — typically script sources, javascript globals. It does not bypass authentication or paywalls.
- What category is Retina.js?
- Retina.js is classified under JavaScript libraries in the PluginView directory.
- How many fingerprint rules cover Retina.js?
- 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 Retina.js?
- Illustrative public indicators for Retina.js include js/retina.min?.js?ver=; RetinaImage; retinajs. A live scan may match additional proprietary rules beyond these examples.
