Detect Flutter
Flutter is an open source framework by Google for building beautiful, natively compiled, multi-platform applications from a single codebase.
Detection looks at meta tags, javascript globals across 4 fingerprint rules among the site's public responses.
01
Websites using Flutter
Loading website list…
02
Signal classes
PluginView evaluates public page signals in these classes when identifying Flutter. Individual fingerprint rule bodies are proprietary and are not published.
- Meta tags
- JavaScript globals
03
Example public indicators for Flutter
Illustrative indicators derived from public catalog metadata for Flutter. A live scan may match additional proprietary rules beyond these examples.
- id: flutterweb-theme
- _flutter.loader
- _flutter_web_set_location_strategy
- flutterCanvasKit
04
What a detection means
- Establishes
- One or more public signals on the scanned page matched a known Flutter signature (4 rules) at the time of the scan.
- Does not establish
- A sitewide install of Flutter, an active vendor contract, exclusive use, or that Flutter is still in place today.
05
How to check a site for Flutter
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest Flutter signals.
- 2. PluginView reads only public responses (meta tags, javascript globals) and scores them against the Flutter signature set (4 rules).
- 3. Review the confidence score and text explanation for Flutter on the results page.
06
Commonly implies
A confirmed Flutter match also implies these technologies are present.
07
FAQ: detecting Flutter
- Can PluginView detect Flutter without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for Flutter — typically meta tags, javascript globals. It does not bypass authentication or paywalls.
- What category is Flutter?
- Flutter is classified under UI frameworks in the PluginView directory.
- How many fingerprint rules cover Flutter?
- This reference currently tracks 4 fingerprint rules across meta tags, javascript globals. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses Flutter?
- Illustrative public indicators for Flutter include id: flutterweb-theme; _flutter.loader; _flutter_web_set_location_strategy. A live scan may match additional proprietary rules beyond these examples.
