What is a text file saved on a computer that can identify users and customize web pages called?

A text file saved on a computer that identifies users and customizes web pages is known as a cookie. Cookies are small pieces of data that websites store on a user's device to remember information about the user, such as login details or user preferences. When a user visits a website, the cookie is sent back to the server, allowing the site to provide a more personalized experience based on the stored information.

For instance, if a user logs into an account on a website, a cookie might be created to remember the login state, so the user remains logged in for subsequent visits without needing to enter their credentials again. This enhances user convenience and engagement with the website.

Other options do not accurately describe this type of data storage. User data broadly refers to any information related to a user and does not specifically imply personalization through small text files. A session file might refer to temporary data stored during a user's browsing session, but it does not persist after the browser is closed. A profile may imply a broader account structure that encompasses user settings and preferences but not specifically a text file used for identifying and customizing web experiences.