Development.
Code & Navigation.

A study to measure how the website is easy for everyone to use, regardless of their special needs. It could be done by specific tools, following the W3C guideline or even by an usability test.

Adaptive websites adapt to the width of the browser at a specific points. In other words, the website is only concerned about the browser being a specific width, at which point it adapts the layout.

The concept of constraints in design can be defined as the practice of limiting user actions on a system. Constraints limit the actions that can be performed by the user, thus increasing the usability of the design and reducing the likelihood of operator error.

When a site utilizes new technology, if disabled, the content maintains effectiveness for the users.

Hick's law, or the Hick–Hyman Law, named after British and American psychologists William Edmund Hick and Ray Hyman, describes the time it takes for a person to make a decision as a result of the possible choices he or she has: increasing the number of choices will increase the decision time logarithmically.

Variation of usability testing where representative users perform realistic tasks by interacting with a paper version of the interface that is manipulated by a person 'playing computer,' who doesn't explain how the interface is intended to work.

A formal way of documenting a solution to a common design problem. The idea was introduced by the architect Christopher Alexander for use in urban planning and building architecture, and has been adapted for various other disciplines, including teaching and pedagogy, development organization and process, and software architecture and design.

Progressive enhancement is a strategy for web design that emphasizes accessibility, semantic HTML markup, and external stylesheet and scripting technologies.

A simulation of the final product. It’s like an interactive mockup that can have any degree of fidelity. The main purpose of building prototypes is to test whether or not the flow of the product is smooth and consistent.

Web accessibility refers to the inclusive practice of removing barriers that prevent interaction with, or access to websites, by people with disabilities. When sites are correctly designed, developed and edited, all users have equal access to information and functionality.

Web usability is the ease of use of a website. Some broad goals of usability are the presentation of information and choices in a clear and concise way, a lack of ambiguity and the placement of important items in appropriate areas.

A website wireframe, also known as a page schematic or screen blueprint, is a visual guide that represents the skeletal framework of a website.