CookieCleaner

Name: CookieCleaner
Author: Frankk Darko

Automatically clears cookies and session data (localStorage) of chosen sites at regular intervals, to limit the impact of cookie-stealing malware. Free, open-source, no telemetry, no server.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-09-08

Version:

1.0.0

Last updated: 2026-08-14

Features & Capabilities

"Infostealer" malware steals your browser's cookies and allows an attacker to log in to your accounts without a password and without triggering 2FA, since the session is already authenticated.

A stolen cookie is only useful as long as the session is valid. CookieCleaner regularly clears cookies and session tokens from the sensitive sites of your choice: this reduces the window of opportunity for exploiting a stolen cookie from several weeks to just a few hours.

Features:

Automatic cleaning every 30 minutes to 24 hours, or when the browser starts
Two modes: list of selected sites, or “clean everything except my whitelist”
One-click presets: Discord, Google, Steam, PayPal, Microsoft, social media…
Clears localStorage / IndexedDB — where tokens like Discord’s are stored
Direct links to “connected devices” pages to revoke sessions on the server side
Breach checks: email via Have I Been Pwned, password via the k-anonymity API
Cleanup log, interface in 5 languages (FR, EN, ES, DE, IT)

Let’s be honest: CookieCleaner reduces the risk; it doesn’t eliminate it. If malware is active on your device, it can steal your cookies again. This tool complements a secure system, antivirus software, and 2FA—it does not replace them.

Privacy: No data leaves your device. No servers, no accounts, no statistics. Full source code: https://github.com/FrankkDarko/CookieCleaner

User Growth & Download Statistics

Add-on

By:

Frankk Darko

Daily users:

Version:

1.0.0 Last updated: 2026-08-14

Version code:

6406779

Creation date:

2026-08-11

Firefox add-on GUID:

cookiecleaner@frankkdarko.addons

Firefox add-on numeric ID:

3052294

Firefox on Android:

Yes

Risk:

Permissions:

Host permissions:

<all_urls>

Size:

47.85KB

Email:

co*****@frenchoasis.studio

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-09-08

Compare stats and ranking:

Ranking

# 122,178 ▼ 923

Other rankings

#43 in antivirus keyword 26 ▼ 2#179 in malware keyword 47 ▼ 2

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Frankk Darko

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/freecookiecleaner/

Email:

co*****@frenchoasis.studio

Website:

https://github.com/FrankkDarko/CookieCleaner/issues

Is CookieCleaner Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

CookieCleaner requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

CookieCleaner is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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