Cookies are small often encrypted text files that are stored by the browser on your computer or mobile phone. Cookies are sent to your browser by a website you visit. They are widely used by web developers to help users navigate their websites efficiently and perform certain functions. For example, cookies can be used to help the website to remember information about your visit, like your preferred language and other settings. That can make your next visit easier and the site more useful to you.
Most web browsers automatically accept cookies, but if you do not want information collected this way, there is a simple procedure in most browsers that allows you to block cookies.
Most of the modern browser provide functionality to delete existing cookies, allow or block all cookies, and set preferences for certain websites.