Visual communication is the communication of ideas through the visual display of information. Primarily associated with two dimensional images, it includes: art, signs, photography, typography, drawing fundamentals, colour and electronic resources. Recent research in the field has focused on web design and graphically oriented usability. It is part of what a graphic designer does to communicate visually with the audience.

Visual communication on the World Wide Web is perhaps the most important form of communication taking place when users are surfing the Internet. When experiencing the web, one uses the eyes as the primary sense and therefore the visual dísplay of a website is important for the users understanding of the communication taking place.

If one web creator decides not to put emphasis on the visual communication of a website, the risk of sending a wrong message is increased.

Usability is a term used to denote the ease with which people can employ a particular tool or other human-made object in order to achieve a particular goal. Usability can also refer to the methods of measuring usability and the study of the principles behind an object's perceived efficiency or elegance.

In human-computer interaction and computer science, usability usually refers to the elegance and clarity with which the user interface of a computer program or a web site is designed. The term is also used often in the context of products like consumer electronics, or in the areas of communication, and knowledge transfer objects (such as a cookbook, a document or online help). It can also refer to the efficient design of a mechanical objects such as a door handle or a hammer.

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