Guiding principles of web accessibility

- [Presenter] To ensure you can build an accessible application, it is important to follow the four basic principles that form the foundation of web accessibility. These principles provide a framework for designing and developing inclusive websites. The four principles represented by the acronym POUR are perceivable, operable, understandable, and robust. Let's begin by explaining the first principle, perceivable. To ensure accessibility, information and user interface component should be presented in a way that users can perceive them. An application is considered perceivable if it includes alternative text for images, video captions, and clear and distinguishable content. By making all content perceivable, web developers can ensure that users with visual impairment or other sensory disabilities can assess and understand the information on the website. Moving on to the second principle, operable, user interface component and navigation must be operable. This means that users should be able to interact with all the functionalities of the websites using different inputs methods such as keyboard navigation, or voice commands. Web developers need to ensure that all interactive elements, such as buttons and links are easily accessible and can be activated without any barriers. By focusing on operability, websites can be used by individuals with motor disability or those with difficulty using a mouse or touchscreen. Next, the thought principle, understandable, information and the operation of the user interface must be understandable. This requires using clear and simple language, providing instructions and feedback, and organizing the content logically and intuitively. Web developers should strive to make the website easy to navigate and understand so the users with cognitive or learning disabilities can effectively interact with the content on the website. Finally, the fourth principle, robust, content must be robust enough to be interpreted reliably by a wide variety of user agents, including assistive technologies. This means using web standards and technology supported by different browsers and assistive technologies, ensuring compatibility and interoperability, web developers should test their websites across different platforms, browsers, and devices, to ensure that all users can assess and interprets the content correctly. Now, imagine yourself as a user navigating a website. Would you prefer a website that lacks the necessary accessible features or one that follows all the guidelines for accessibility? Here's a challenge for you. Set one goal to make your website more accessible based on at least one of the guiding principles. Then share your goal by commenting on the course Q&A. Finally, set a reminder on your calendar 30 days from now to check on your progress.