What is a common mistake when implementing alternative text for images and icons?

The choice highlighting that all listed mistakes are common when implementing alternative text for images and icons addresses various pitfalls that impact web accessibility.

Using empty alt attributes for functional icons is a mistake because functional icons, such as buttons or links that convey actions (like a shopping cart icon), should provide context to assistive technologies. An empty alt attribute implies that the icon has no function, which can confuse users relying on screen readers, leaving them unaware of the action they are supposed to take.

Providing descriptive text for decorative images is also problematic. Decorative images are often used purely for visual enhancement and do not add meaningful content to the page. Using descriptive alt text for such images can distract users with screen readers, as they will be presented with unnecessary information that does not contribute to their understanding of the content.

Not providing any text for images is another common mistake. Images that convey important information or content without any accompanying text can leave users who depend on assistive technologies at a disadvantage, as they miss out on understanding the visuals presented on the webpage.

Collectively, these mistakes highlight the importance of accurately implementing alternative text, ensuring that images serve their intended purpose while maintaining accessibility for all users. Each scenario demonstrates a lack of understanding of how to effectively communicate the role of images within