A cookie is a simple text file that is stored on your computer or mobile device by a website’s server. Only that server will be able to retrieve or read the contents of that cookie. Each cookie is unique to your web browser. It will contain some anonymous information such as a unique identifier as well as the site name.
Cookies do lots of different jobs, including letting you navigate between pages efficiently, storing your preferences, and generally improving your experience of a website. Most websites you visit will use cookies to improve your user experience by enabling that website to “remember” you, either for the duration of your visit (using a “session cookie”) or for repeat visits (using a “persistent cookie”).