About Consent-O-Matic
Consent-O-Matic answers cookie pop-ups for you, using the choices you set, instead of hiding them or accepting everything. It is built by the Centre for Advanced Visualization and Interaction at Aarhus University in Denmark, and the project grew out of research into how consent dialogs nudge people.
It recognises many common consent pop-ups and ticks the options you picked when you set it up, then shows a small checkmark next to the extension icon. Refusing marketing and analytics by default is one setting. The rules for each consent platform live in the project's public repository and are fetched by the extension, so support for new banners can reach you without a store release. Anyone can contribute rules.
The catch is coverage: it works from rules, so a banner on a platform it has not covered will still appear, and it does not block trackers or ads by itself. The Firefox version is 1.1.5 from June 2025, while Chrome and Edge show 1.1.3 from October 2024, and the latest repository commit we found dates from November 2025. It is free and MIT licensed. If cookie banners wear you down, it is worth installing.
Pros and cons
- Answers banners with your own choices instead of accepting by default
- Built by privacy researchers at a university, MIT licensed
- Rules update from the project's repository without a store release
- Works on Chrome, Firefox, Edge and Safari
- Only handles banners from consent platforms it has rules for
- Chrome and Edge are on 1.1.3 (October 2024), and 2026 rule requests have gone unanswered
- Does not block trackers or ads by itself
Permissions
It can read and change data on all websites, because it has to find and click the consent dialog on any page. It also uses the active tab and storage for your preferences.
