Your privacy is important to us.
Reader Mode collects absolutely zero personal data from users and doesn't track any pages visited by users via our extensions and app. For Reader Mode Free, Pro and Education, all data such as highlights, notes and pages are stored locally on the computer which you have installed Reader Mode on. For Reader Mode Premium, these data are stored on our secure server and only you can access these data via your connected account.
Meanwhile for shared pages, a random, unique, and anonymous string is used to verify identity, not anything related to your personal information.