FLoC Block

FLoC Block

Block FLoC ad-targeting code on Chrome

What is FLoC Block?
FLoC Block is a Chrome extension that prevents FLoC, the ad-targeting algorithm used by Google Chrome, from divulging your personal information to websites. It removes the FLoC API and ensures your privacy is protected while browsing.
Merlin
Stats
By: Shivan
Users: 165
Rating: 5.00 (1)
Version: 0.0.2 (Last updated: 2021-04-20)
Creation date: 2021-04-19
Risk impact: Low risk impact
Risk likelihood: Very low risk likelihood
Manifest version: 2
Size: 15.87K
URLs: Website
Stats date:

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Not available on Firefox
Not available on Edge
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Merlin
Summary

FLoC, short for Federated Learning of Cohorts, is the new algorithm used by Google Chrome to group users into buckets based on their interests. You can read more about it here: https://web.dev/floc, and why Brave and some other browsers have blocked it here: https://brave.com/why-brave-disables-floc/.

If you HAVE to use Chrome, this extension is a simple way to prevent FLoC from divulging your "cohort id" to websites. You can also consider using DuckDuckGo's extension for this plus other privacy protections: https://spreadprivacy.com/block-floc-with-duckduckgo.

The extension inserts a script on every page load that removes the FLoC API (document.interestCohort()) so if a website tries to call that function, it will get an error. This is also unfortunately why the FLoC Block extension needs permission for all websites. However, it's completely open source so you can see what it's doing here: https://github.com/shivankaul/flocblock. I've included instructions on how to install from source.

Icons credit: https://www.freepik.com from https://www.flaticon.com

User reviews
A useful little extension to help maintain privacy if you must use chrome.
by John Dow John Dow, 2021-04-21
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Safety
Risk impact

FLoC Block is relatively safe to use as it requires very minimum permissions.

Risk likelihood

FLoC Block has earned a good reputation and can be trusted.

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Screenshots
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