A cookie is a small text file that a website saves on your computer when you visit the site. It usually remembers your personal or web settings, such as your preferred language or address. Later, when you visit the same website again, your browser brings back these textual files that belong to this website. This enables the website to display information adjusted to your preferences.
Cookies can store a range of information, including personal data (such as your name or email). However, these information can be stored only if you enable it - websites cannot gain access to information that you had not enabled nor can they access other files on your computer. Saved settings for storing and sending cookies are not visible. However, you can change the browser settings and select accepting or refusing cookies requests or delete stored cookies after closing the browser.