Cookie

A cookie is a small data file that a Web site can store on a user’s device when he or she visits it.

Cookies are used to keep track of a user’s online activities, such as pages visited, links clicked, time spent on a page, and so on. They can help personalize the user’s experience by remembering the user’s preferences and login information, and can also be used for targeting and advertising tracking purposes, potentially adversely affecting user privacy.