An Internet browser, also called a web browser, is a program that allows the user to view web pages from the Internet. The browser takes the code of a web page and interprets it. Line by line, it decides what goes where on the screen so that you can see it.

The web browser uses the connections that the system software has established. Frequently, TCP/IP (Protocol) is used for the connection. The web browser can only interpret commands; in most cases, it cannot change the data.

Many Internet browsers also add extra features, like the ability to track where you have been. The user has the option to save, or "bookmark," these references to the addresses of websites you have browsed. This feature makes it easier to return to those same locations in the future.