Forget Me Not - Forget cookies & other data Firefox

Forget Me Not - Forget cookies & other data

By: Lusito
Make the browser forget website data (like cookies, local storage, etc.), except for the data you want to keep by adding domains to a whitelist, graylist, blacklist, or redlist.
Forget Me Not - Forget cookies & other dataForget Me Not - Forget cookies & other dataForget Me Not - Forget cookies & other dataForget Me Not - Forget cookies & other dataForget Me Not - Forget cookies & other dataForget Me Not - Forget cookies & other dataForget Me Not - Forget cookies & other dataForget Me Not - Forget cookies & other data
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Features & Capabilities

Forget Me Not is a privacy-focused Chrome extension that intelligently manages website data such as cookies, local storage, history, and more. It allows you to add domains to customizable whitelists, graylists, blacklists, or redlists to control exactly which data is retained or erased.

Features include automatic data deletion when leaving a website, on browser startup, or instantly blocking data setting. It supports deletion of third-party cookies and multiple types of site data including forms, passwords, cache, IndexedDB, service workers, and plugin data. The extension respects your privacy by not collecting or sending any user data externally.

With a fresh UI in version 2.0, extensive unit testing for reliability, and detailed customization options, Forget Me Not offers effortless privacy management tailored to your browsing habits. It also provides manual cleaning tools and helpful documentation for easy setup and use.

User Growth & Download Statistics

Manifest V2 Add-on
By:
Lusito
Daily users:
9,167 -75
Rating:
4.33
(286)
Version:
2.2.8 Last updated: 2020-09-13
Version code:
5032677
Creation date:
2017-11-19
Risk:
Very high risk impact Low risk likelihood
Permissions:
Content scripts matches:
  • lusito.github.io
Size:
1.89MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-19
Compare stats and ranking:

Ranking

# 808 ▼ 2
Other rankings
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For Developers

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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:
Lusito
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/forget_me_not/
Website:
https://github.com/Lusito/forget-me-not/issues

User Reviews

Reviewers praise Forget Me Not for its clean UI and strong cookie-management, with automatic deletion of non-saved cookies and reduced tracking. It works well when properly configured and can permanently delete existing cookies, with notable mobile usefulness. However, critics point to lack of ongoing maintenance, occasional performance drawbacks (page hangs or delays), incomplete blocking on some sites, and a sometimes tricky setup that requires enabling certain options. Overall, a solid privacy tool with caveats about upkeep and configuration.
Pros
  • Clean, logical UI and generally easy to use.
  • Automatically deletes cookies you don't save, reducing tracking and personalized ads.
  • Works as intended and is effective when configured correctly.
  • Can permanently delete existing cookies.
  • Strong mobile support; essential on Firefox Mobile for managing cookies and site data.
Cons
  • No longer maintained / updates stopped.
  • Page load delays or hangs in some configurations.
  • Does not block every cookie; some cookies persist on certain pages.
  • Configuration is tricky and requires enabling specific options (sometimes not obvious).
Recent reviews
It can not block every cookie which is a bit weird. It does what it has to do that is perfect enough for me to a certain point. It does slow down pages a bit not by much but neither i care for that. All that matters is it works for what they wanted it to work and even tho it does not work on every page is a bit of a problem when you cant block certain pages to create those spyware cookies... The sad part is is not getting new updates no more...
by BA*****, 2025-12-28
Makes page loadings hang with setting 'on leave' enabled. Also no longer maintained as stated at github.
by sd*****, 2025-09-22
This extension is my beloved! Logical and clean UI! So much power with so little annoyance!
by Ca*****, 2025-08-27
View all user reviews ›

Is Forget Me Not - Forget cookies & other data 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.

Forget Me Not - Forget cookies & other data requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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  • High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
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  • Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
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.

Forget Me Not - Forget cookies & other data has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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