Grammarly: AI Writing Assistant and Grammar Checker App

Extensions with the cookies permission can retrieve and modify cookies (requires host permissions).

Extensions with the scripting permission can inject and execute code in web pages, which can potentially be used for data exfiltration or session hijacking (requires host permissions, available since Manifest V3).

Extensions with the clipboardRead permission can read the system's clipboard content.

Extensions with the tabs permission can query the url, pendingUrl, title, and favIconUrl of any tab.

Extensions with the nativeMessaging permission can communicate with cooperating applications installed on the user's machine.

Extensions with the sidePanel permission can display content in the browser's side panel alongside the main content of a webpage, enabling a persistent interface that complement the user's browsing journey (available since Manifest V3).

Extensions with the storage permission can store and retrieve user data, which can persist even after clearing the cache and browsing history.

Extensions with the identity permission can prompt users to authenticate with their Google accounts using OAuth 2.0, but the user must approve the request for the extension to obtain an access token.

Extensions with the notifications permission can display notifications on the user's desktop.