Which new Success Criterion addresses the acceptable size of interactive elements?

The criterion that addresses the acceptable size of interactive elements is 2.5.5 Target Size. This Success Criterion emphasizes the importance of ensuring that touch targets—like buttons and links—are large enough to be easily activated by users, especially those using touch devices. By specifying a minimum target size, it helps reduce the risk of users accidentally clicking on the wrong element or struggling to interact with small targets, which is especially beneficial for users with motor impairments.

When interactive elements are appropriately sized, it improves the overall usability of a web application or site, making it accessible to a broader audience. This criterion is particularly relevant in today’s context where mobile usage is prevalent, and users interact with interfaces using their fingers. Ensuring that targets meet the recommended minimum dimensions fosters an inclusive environment for all users, enhancing their experience and functionality.