cookies on a website is used to ?

A cookie is a small piece of data that a website stores on the user's computer or browser to keep track of information about the user's activity and preferences. When you visit a website, cookies help remember your login status, language selection, theme preferences, and other personalized settings so that the site can provide a smoother and more customized experience the next time you visit.

For example, if you add items to a shopping cart on an online store and leave the website, cookies help ensure your cart is still there when you return. Similarly, if you select a preferred language on a website, cookies allow the site to remember that choice during future visits.