A person who moderates a discussion or activity to collect feedback and information

When a product is overloaded with features and functions and no longer serves core user needs

The level of detail presented in a prototype, mockup, or wireframe—can be low (displays a very rough approximation of the design), medium (displays a little more detail than low fidelity), or high (close in nature to the final design) [See high-fidelity prototype and low-fidelity prototype]

A measure of how quickly and easily information can be navigated through or found

A testing method to see where a user clicks first on a website or app when trying to complete a specific task or goal

A design technique that automatically scales the layout to fit a browser window or monitor resolution

A research method where researchers bring together a small group of people to take part in an interactive discussion about a specific topic (or set of topics) in a moderated environment

A term that goes back to the days before digital design when newspapers were sold from sidewalk kiosks and the most important, headline-grabbing stories were placed at the top of the page (above the fold) in an attempt to get the immediate attention of passersby; the term is now used in website design to describe the content that is visible to a user when a web page first loads (without the need to scroll)

The color of the text

How easy it is for a reader to interpret, understand, and digest content that appears in the form of words, sentences, or paragraphs in a specific type style

A particular typeface’s weight, width, or style, etc., for example, Arial bold

Input controls like text fields, checkboxes, radio buttons, submit buttons, and text area

Anything that makes a task harder and slows down or prevents a user from accomplishing a desired action or task on a website or app

Uses HTML, CSS, and JavaScript to build the front-end portion of a website that a user sees and interacts with