A key performance indicator is a variable that measures how well an entity is performing. It's a figure that designates an individual or item's performance level. A particular company may use metrics such as sales, revenue, production, and market share to gauge the success of their firm.
A selector that can be applied to any HTML element. ID should be used when designing for a single instance, such as using the id="main" attribute on an <h1> tag.
A tool that allows user experience designers, or people who design products and websites with consumers in mind, to track where users look on the screen. Eye-tracking can measure users’ attention and the duration of time they spend on different areas of a website. With this information, websites can create user experience solutions such as buttons with varying colours designed to catch the eye.
The art and discipline of putting together set of typefaces into a harmonious and readable type system. A typeface designer spends much time considering many things such as clear visual message, readability at different sizes, legibility at small point sizes, ease of use for printing processes on its own or over the top of other fonts.
A process in which subjects use a product or service under test conditions and report their experience.
A logo, symbol, design, or pattern used to promote and distinguish one's brand or company from others.
A design language developed by Google. The goal of Material Design was to create fluid, natural movement for users on any platform they happen to be using.
A discipline that analyses the usability of an application by assessing its interaction design and user experience.
A theory in psychology that discusses the general idea that the whole is greater than the sum of its parts. It's based on a human need to search for stability and meaning, which leads to organic movements towards wholeness. Gestalt Theory assumes there are inherent flaws in how we perceive forms and patterns, and it holds that this innate tendency transforms into an active process of looking for order in reality.
The measure of how easily light passes through a material. It is a quantitative characteristic that can be represented as a number within the range of [0, 1], and in some cases [0%,100%], with lower numbers indicating higher transparency.
A usability assessment method that is used to evaluate a design against established usability principles or heuristics. It is based on the idea that designers can use their experience to find areas of poor design without extensive user testing.