How can text alternatives for non-text content improve accessibility?

Text alternatives for non-text content, such as images, videos, and audio, significantly enhance accessibility by ensuring that all users, regardless of their disabilities, can access and understand the content. When non-text elements are accompanied by descriptive text alternatives, individuals who rely on assistive technologies, such as screen readers, can receive the same information and context as sighted users. For instance, alt text for images allows visually impaired users to grasp the meaning or function of an image, thereby creating a more inclusive environment.

This practice is rooted in the principle of providing equivalence, which enables users with different abilities to interact with and comprehend online content effectively. By including text alternatives, web creators acknowledge the diverse needs of their audience and strive to eliminate barriers that may prevent some individuals from fully engaging with the material presented on a website.