When a website is built with Flutter, its rendering pipeline hides the usual signals developers rely on to inspect a page where no readable HTML structure, no easy way to tell which packages or plugins power it. Figuring that out normally means digging through network requests and source maps by hand.
Flutter Recon runs a detection check on the current tab to confirm whether the site is Flutter-based. If it is, the extension scans for every Flutter/Dart package referenced, lists them in a clean panel, and links each one straight to its page on pub.dev - turning a manual investigation into a one-click lookup.
The extension inspects page assets and bundle metadata through the browser's extension APIs to identify Flutter's runtime signatures, then cross-references discovered package names against pub.dev. It's aimed at developers doing competitive research or curiosity-driven "how did they build this" digging - read-only, no data collection.