Web design is the designing and graphical presentation of content shown on the Internet in the form of Web sites and other Web applications using many different forms of media. The basic design of most pages on the Web use HTML, CSS, and the newest form of language, XHTML. Many sites today also integrate various forms of dynamic, interactive content using E-Commerce, and server-side languages such as PHP (Hypertext Preprocessor), and ASP. Web design contrasts with Web development, which includes Web server configuration, writing Web applications, and server security.

A Web site is a collection of information about a particular topic or subject. Designing a website is defined as the arrangement and creation of Web pages that in turn make up a website. A Web page consists of information for which the Web site is developed. A website might be compared to a book, where each page of the book is a web page.

As in most collaborative designs, there are conflicts between differing goals and methods of web site designs.