Does it FLoC is a free Chrome extension developed by Jack R. It falls under the category of Browsers and is classified as an Add-ons & Tools subcategory. The main purpose of this extension is to scan websites for the FLoC API or FLoC blocking policy.

When you click on the extension, it provides information about the current site's usage of FLoC. It shows if the site is using FLoC and if it is explicitly blocking FLoC data collection. This can be helpful for users who are concerned about their privacy and want to be aware of websites that track their browsing behavior.

The FLoC API, which stands for Federated Learning of Cohorts, is a new tracking system being developed by W3C and implemented in Chrome. It aims to replace third-party cookies that will soon be removed in Chrome. By categorizing people based on their browsing history and assigning them a cohort ID, FLoC allows websites to target ads without relying on individual user data.

It's worth noting that there may be ways to evade detection of FLoC usage by this extension due to CORS issues. However, the extension provides a valuable service in informing users about FLoC usage on websites.

Overall, Does it FLoC is a useful Chrome extension for those interested in understanding and monitoring FLoC usage on websites. It provides a simple and convenient way to check if a site is using FLoC or blocking FLoC data collection.