Bookmarks-Checker is a Chrome extension designed to help users manage their bookmarks by identifying duplicates and dead links. This free tool simplifies the process of maintaining an organized favorites list, allowing users to delete unnecessary entries quickly. It operates with essential permissions to read and modify bookmark information and access URLs to verify their validity.

The extension features two methods for detecting duplicate bookmarks: fuzzy matching based on the URL domain name and strong matching based on the full URL. Additionally, users can configure the concurrency of checks and set timeout requests for invalid bookmarks, enhancing the efficiency of the verification process. Importantly, Bookmarks-Checker does not store any bookmark data, ensuring user privacy and data security.