Detect Sapper
PluginView detects Sapper, a Web frameworks, by evaluating javascript globals, html markup, inline scripts on publicly reachable pages. Illustrative public indicators associated with Sapper include __SAPPER__, <script*>__SAPPER__. Full fingerprint rules remain proprietary; this page summarizes the signal classes and example indicators used for identification.
Detection looks at javascript globals, html markup, inline scripts across 3 fingerprint rules among the site's public responses.
Websites using Sapper
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Signal classes
PluginView evaluates public page signals in these classes when identifying Sapper. Individual fingerprint rule bodies are proprietary and are not published.
- JavaScript globals
- HTML markup
- Inline scripts
Example public indicators for Sapper
Illustrative indicators derived from public catalog metadata for Sapper. A live scan may match additional proprietary rules beyond these examples.
- __SAPPER__
- <script*>__SAPPER__
What a detection means
- Establishes
- One or more public signals on the scanned page matched a known Sapper signature (3 rules) at the time of the scan.
- Does not establish
- A sitewide install of Sapper, an active vendor contract, exclusive use, or that Sapper is still in place today.
How to check a site for Sapper
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Sapper signals.
- 2. PluginView reads only public responses (javascript globals, html markup, inline scripts) and scores them against the Sapper signature set (3 rules).
- 3. Review the confidence score and text explanation for Sapper on the results page.
Commonly implies
FAQ: detecting Sapper
- Can PluginView detect Sapper without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for Sapper — typically javascript globals, html markup, inline scripts. It does not bypass authentication or paywalls.
- What category is Sapper?
- Sapper is classified under Web frameworks in the PluginView directory.
- How many fingerprint rules cover Sapper?
- This reference currently tracks 3 fingerprint rules across javascript globals, html markup, inline scripts. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses Sapper?
- Illustrative public indicators for Sapper include __SAPPER__; <script*>__SAPPER__. A live scan may match additional proprietary rules beyond these examples.
