Who's Selling My Info? od Oapostrophe

As of July 2020, companies are required to give California users the option to opt out of selling their personal information. But most hide these opt-outs in hard to see locations. This extension finds these opt outs as you browse and notifies you with an easy-to-use link.

NOTE: This extension will only work for California users, and works by searching the page for the phrases "Do Not Sell" and "Don't Sell." Some sites may generate false positives if they use these words in other contexts. Additionally, not every page that sells user data complies with CCPA; this extension only detects the 1/3 of webpages which provide a data sale opt out.