PluginView detects Flywheel, a PaaS and Hosting, by evaluating response headers on publicly reachable pages. Illustrative public indicators associated with Flywheel include x-fw-hash, x-fw-serve, x-fw-server: Flywheel/?. Full fingerprint rules remain proprietary; this page summarizes the signal classes and example indicators used for identification.
Detection looks at response headers across 5 fingerprint rules among the site's public responses.
Websites using Flywheel
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Signal classes
PluginView evaluates public page signals in these classes when identifying Flywheel. Individual fingerprint rule bodies are proprietary and are not published.
- Response headers
Example public indicators for Flywheel
Illustrative indicators derived from public catalog metadata for Flywheel. A live scan may match additional proprietary rules beyond these examples.
- x-fw-hash
- x-fw-serve
- x-fw-server: Flywheel/?
- x-fw-static
- x-fw-type
What a detection means
- Establishes
- One or more public signals on the scanned page matched a known Flywheel signature (5 rules) at the time of the scan.
- Does not establish
- A sitewide install of Flywheel, an active vendor contract, exclusive use, or that Flywheel is still in place today.
How to check a site for Flywheel
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Flywheel signals.
- 2. PluginView reads only public responses (response headers) and scores them against the Flywheel signature set (5 rules).
- 3. Review the confidence score and text explanation for Flywheel on the results page.
Commonly implies
A confirmed Flywheel match also implies these technologies are present.
FAQ: detecting Flywheel
- Can PluginView detect Flywheel without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for Flywheel — typically response headers. It does not bypass authentication or paywalls.
- What category is Flywheel?
- Flywheel is classified under PaaS, Hosting in the PluginView directory.
- How many fingerprint rules cover Flywheel?
- This reference currently tracks 5 fingerprint rules across response headers. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses Flywheel?
- Illustrative public indicators for Flywheel include x-fw-hash; x-fw-serve; x-fw-server: Flywheel/?. A live scan may match additional proprietary rules beyond these examples.
