# Flag Cookies

> A cookie and browser storage data manager on steroids to mark, 'flag', and manage cookies using rulesets.

Canonical page: [https://chrome-stats.com/d/flag-cookies](https://chrome-stats.com/d/flag-cookies)

## Overview

- **ID:** `flag-cookies`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Jan Riechers
- **Category:** web-development,privacy-security
- **Daily users:** 11,461
- **Weekly downloads:** 160
- **Rating:** 3.68 / 5 (31 ratings)
- **Version:** 3.6.8
- **Last updated:** 2026-07-10
- **First published:** 2017-12-24
- **Size:** 344 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/flag-cookies/)
- **Website:** [https://github.com/jrie/flagCookies](https://github.com/jrie/flagCookies)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/flag-cookies/privacy/](https://addons.mozilla.org/firefox/addon/flag-cookies/privacy/)

## Description

**Flag Cookies** is a powerful Chrome extension designed for advanced users to manage and control browser cookies and storage data with precision. It enables users to flag and set rules for cookies to be deleted or protected automatically, supporting modes like Global, Auto Flag, and Profile to customize cookie management per website or session.

Key features include cookie detection, automatic deletion or protection based on user-defined rules, profile switching to toggle between login states, and support for Firefox Multi-Account-Containers. It also offers import/export of settings, detailed action logs, and notifications, making it a comprehensive privacy tool. Importantly, Flag Cookies ensures privacy by not storing any cookie values or session data and avoids tracking browsing history.

Ideal for users seeking granular control over cookies to enhance privacy, improve browser performance, and manage logged-in states efficiently, Flag Cookies extends cookie management far beyond typical browser features.

## Rankings

- #720 — Overall
- #64 — Web Development
- #157 — Privacy & Security
- #8 — cookie
- #34 — flag
- #45 — cool

## Permissions and access

### Permissions

- `cookies`
- `tabs`
- `webRequest`
- `storage`
- `unlimitedStorage`
- `clipboardWrite`
- `notifications`
- `contextualIdentities`
- `webNavigation`

### Host permissions

- `<all_urls>`

### Content script matches

- `*`

## Safety

- **Risk impact:** Very high risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension was updated in the past 3 months. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

The add-on generally works as advertised and aids cookie-related tasks, including exporting cookies. However, a dominant recurring issue is excessive memory usage (memory leaks), sometimes accompanied by high CPU use, particularly with many tabs or long sessions. This memory problem is the most consistently mentioned drawback across reviews.

### Pros

- Does what it claims and works as advertised
- Useful for cookie-related tasks, including exporting cookies to clipboard in JSON (e.g., for login sessions)

### Cons

- High memory usage / memory leaks, especially with many tabs or Reddit sessions

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Source: [Chrome-Stats](https://chrome-stats.com/d/flag-cookies)