CookieBlock is a browser extension available for Chrome that aims to protect your privacy by automatically enforcing your cookie consent preferences. Developed by CookieBlock Developers, this free add-on uses advanced machine-learning technology to categorize cookies into four distinct purposes: "Necessary", "Functionality", "Analytics", and "Advertising". With CookieBlock, you have the power to individually permit or reject each type of cookie.

Unlike nagging cookie banners that interrupt your browsing experience, CookieBlock only requires you to define your policy once. It guarantees that the cookies you reject are actually removed from your browser, ensuring your privacy is preserved. This extension works on any website you visit and does not rely on the honesty of the website host.

CookieBlock is a valuable complement to other extensions that remove annoying cookie banners. It was built by members of the Information Security Group at the Computer Science Department of ETH Zürich and was developed as part of the master thesis "Analyzing Cookies Compliance with the GDPR".