Forget Me Not - Forget cookies & other data

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: Protect Your Privacy - Firefox Add-On

Forget Me Not - A Firefox add-on that ensures your browsing privacy by clearing cookies, local storage, and other website data once you leave the website or when the browser restarts. It allows you to whitelist domains you wish to keep and offers different cleanup types: Never, on Startup, on Leave, and Instantly. It even has the capability to delete third-party cookies.
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View on Firefox Browser Add-ons

Add-on stats

By: Lusito
Users: 13,265
-127
Rating: 4.32
(287)
1 new ratings
Version: 2.2.8 (Last updated: 2020-09-13)
Creation date: 2017-11-19
Weekly download count: 46
Firefox on Android: Yes
Risk impact: High risk impact
Risk likelihood:
Low risk likelihood
Manifest version: 2
Permissions:
  • storage
  • tabs
  • browsingData
  • cookies
  • downloads
  • history
  • notifications
  • webNavigation
  • webRequest
  • webRequestBlocking
    • See more
Size: 1.98M

Ranking

# 671
Other rankings
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Other platforms

Not available on Chrome
Not available on Android
Not available on Edge
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Add-on summary

Analyze keywords

News Version 2.0 has just been released with new features, a new UI and over 335 unit tests to ensure good quality and correct behavior.

Privacy Statement Your privacy is of the utmost importance. This extension does not analyze or collect anything beyond what it needs to fulfill its duty. It does not send any data anywhere not even anonymously. PERIOD.

Newcomers: Some settings are disabled by default to avoid accidental deletion. Start by clicking on the toolbar icon, create rules and activate the settings you need. Click on the help icons/links if you need more information.

Features This web-extension deletes data websites store in the browser in the following situations:

  • When all instances of a website have been left:
    • Cookies
    • Local-Storage (Firefox 58+ only)
    • History & Downloads
    • This can be delayed in seconds
    • Different cleanup types can be applied (see the help page within the add-on for a more detailed description) See more

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Effectively deletes unwanted cookies and tracking data when configured correctly.
  • Helps improve privacy by preventing personalized ads and tracking across sites.
  • User-friendly once properly set up.
  • Essential for mobile in managing cookies compared to desktop.
Cons
  • Configuration can be tricky and may require multiple attempts.
  • Some users report it does not delete cookies as expected.
  • User interface on mobile is considered small and could be improved.
Most mentioned
  • Configuration challenges and settings need to be enabled.
  • Effectiveness in managing cookies when set up correctly.
  • Functionality may vary based on user experience and expectations.
User reviews
by Cleo, 2025-01-28
permertly delete exististing extension & API cookies
by Firefox user 18760424, 2025-01-01
by bpetersxx, 2024-09-14
View all user reviews

Add-on safety

Risk impact

Forget Me Not - Forget cookies & other data requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk likelihood

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

Upgrade to see risk analysis details