Is Flag Cookies safe?

Clean risk

Flag Cookies reads cookies and localStorage from every visited site to display them in its popup, with no observed remote transmission.

Flag Cookies is a cookie management tool that collects full cookie data and localStorage/sessionStorage contents from active tabs and stores them in the background script's memory. The data is gathered on each tab activation and navigation event to power the extension's display and editing UI. No network endpoints received this data during analysis.

Jan Riechersv3.6.9Firefox Add-ons
3Risk
Who publishes it

Jan Riechers - no other listings under this identity

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
Jan Riechers

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 3.6.9. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every site you visit

    <all_urls>

  • Read and change cookies, including the ones that keep you signed in

    cookies

  • See the address and title of every tab you have open

    tabs

  • Watch every request your browser makes

    webRequest

  • Store data in your browser

    storage

  • Store an unlimited amount of data in your browser

    unlimitedStorage

  • Write to your clipboard

    clipboardWrite

  • Show you desktop notifications

    notifications

  • See every page you navigate to, as you navigate to it

    webNavigation

contextualIdentities
Updated 2 November 2026amo-910783