A cookie is a small text file that is placed on your computer or device when you visit a website. It helps the website remember your preferences and settings, such as your login information or language preference, so that you don't have to enter them every time you visit. Cookies also enable the website to track your activity and behavior, which can be used to improve your user experience or for marketing purposes.

You can choose to accept or decline cookies when you visit a website. Most web browsers automatically accept cookies, but you can usually modify your browser settings to decline them if you prefer. However, keep in mind that some features of the website may not work properly if you disable cookies.