The Instagram Followback Scanner is a free Chrome add-on designed to help users identify which of their Instagram connections do not follow them back. By comparing a user's followers and followings, the tool generates a list of non-followers, enabling users to manage their Instagram relationships more effectively. Users can also add individuals to an exceptions list if they prefer not to receive notifications about specific accounts that do not follow them back.

To use the extension, users simply need to sign in to their Instagram account via the browser, navigate to their profile, and initiate a scan. Upon completion, they receive a comprehensive list of users who do not follow them. The tool emphasizes user privacy by not collecting personal login information and cautions against frequent scans to avoid potential sanctions from Instagram.