Is Stonly Browser Extension safe?

Stonly Browser Extension injects its widget storage into any frame whose URL contains stonly-stat-id.html.

A content script runs in all frames on all URLs and checks only for configured Stonly values plus a URL containing stonly-stat-id.html. When that matches, it passes widgetStorageState from extension storage into a page-facing script, allowing page JavaScript in that frame to read stored widget values and send writes back into extension storage.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.