Auto Cookie Optout

Auto Cookie Optout

[This extension is no longer maintained. I recommend switching to Consent-O-Matic. Thank you for using Auto Cookie Optout!]

What is Auto Cookie Optout?
Auto Cookie Optout is an efficient Firefox add-on that allows you to take control of your privacy by opting out of optional cookies. Instead of merely blocking popups, it actively communicates your non-consent to websites, ensuring that site functionality remains intact. It is a more comprehensive approach to cookie management, aimed at solving common issues with traditional content blockers.
Users: 1,467 ▲ 13
Rating: 3.62 (13)
Version: 0.8.4 (Last updated: 2022-08-14)
Creation date: 2021-05-26
Weekly download count: 4
Firefox on Android: Yes
Risk impact: Very high risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
  • storage
  • webRequest
  • webRequestBlocking
  • <all_urls>
Size: 361.46K
Stats date:

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You have the right to choose which cookies you're okay with. If your choice is "as little as possible", Auto Cookie Optout can opt you out of optional cookies on supported websites.

Traditional content blockers may cause the following problems when blocking cookie popups:

  • The popup not being fully removed
  • The scroll bar of the website being gone
  • Site features acting strangely because they're waiting for the result of the cookie consent process

ACO's approach differs from those content blockers in that it actively tells the website that you don't consent to optional cookies. With Auto Cookie Optout, sites should behave the same as when you manually opt out in the popup.

You can audit Auto Cookie Optout's source code at

User reviews
User reviews summary
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.
  • Catches a lot of Opt In/Out popups
  • Open source
  • Responsive developer
  • Works well with other add-ons like uBlock Origin
  • Essential for a usable browsing experience
  • Fails to opt out from 99.99% of websites
  • Doesn't work, still get cookie pop-ups
  • Can crash the content of websites
  • Does not support every website
  • Does not detect popups on some sites
Most mentioned
  • Incompatibility with certain websites
  • Issues with popup detection
  • Open source
  • Useful for regular browsing and private windows
  • Works well with other privacy add-ons
Recent reviews
View all user reviews
Risk impact

Auto Cookie Optout is very risky to use and it requires a lot of sensitive permissions. Avoid installing this add-on unless you absolutely trust this publisher.

Risk likelihood

Auto Cookie Optout has earned a fairly good reputation and likely can be trusted.

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