Internet cookies, akin to bookmarks in a vast digital library, help websites remember users and their preferences. Originating in 1994 to maintain user sessions, they now play a pivotal role in our browsing experiences. This article delves into the types of cookies—first-party, third-party, session, persistent, and secure—their implementation, uses, and privacy implications. As a website owner, understanding these aspects is vital for managing data responsibly and complying with privacy laws, ensuring a balance between convenience and personal data control.