"Usability" refers to the ease of use and the ability of a product to be used effectively and efficiently by users to achieve their goals. In the field of web design, usability is an important factor in the success of a website, as it helps to ensure that visitors have a positive experience on the website and can easily find their way around.

Web designers play an important role in creating a user-friendly website. They need to ensure that navigation is simple and intuitive, content is easily accessible and interaction with the website is enjoyable. This can be achieved by using clear and unambiguous buttons, reducing distractions and optimising the loading speed of the website.

Good usability can help users stay on a website longer and return more often. Poor usability, on the other hand, can lead to users becoming frustrated and leaving the website to visit another website that better fulfils their needs. Web designers must therefore consider the needs and expectations of users to ensure that the website has good usability and provides a positive user experience.