Detect Opal
Opal is a Ruby-to-JavaScript compiler that allows Ruby code to run in web browsers by converting it into JavaScript.
Detection looks at dom selectors across 1 fingerprint rules among the site's public responses.
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Websites using Opal
Loading website list…
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Signal classes
PluginView evaluates public page signals in these classes when identifying Opal. Individual fingerprint rule bodies are proprietary and are not published.
- DOM selectors
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Example public indicators for Opal
Illustrative indicators derived from public catalog metadata for Opal. A live scan may match additional proprietary rules beyond these examples.
- script#opal-elementor-frontend-js, link
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What a detection means
- Establishes
- One or more public signals on the scanned page matched a known Opal signature (1 rules) at the time of the scan.
- Does not establish
- A sitewide install of Opal, an active vendor contract, exclusive use, or that Opal is still in place today.
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How to check a site for Opal
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Opal signals.
- 2. PluginView reads only public responses (dom selectors) and scores them against the Opal signature set (1 rules).
- 3. Review the confidence score and text explanation for Opal on the results page.
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FAQ: detecting Opal
- Can PluginView detect Opal without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for Opal — typically dom selectors. It does not bypass authentication or paywalls.
- What category is Opal?
- Opal is classified under Development in the PluginView directory.
- How many fingerprint rules cover Opal?
- This reference currently tracks 1 fingerprint rule across dom selectors. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses Opal?
- Illustrative public indicators for Opal include script#opal-elementor-frontend-js, link. A live scan may match additional proprietary rules beyond these examples.
