Text alternatives are descriptions or captions that provide information about non-text content, such as images, videos, and audio files. They help ensure that people with disabilities, like those who are blind or have low vision, can understand the content. For example, an image of a sunset might have a text alternative that reads, "A vibrant orange and pink sunset over the ocean." These alternatives are essential for web accessibility, allowing everyone to access information equally. They are often implemented using the alt text attribute in HTML for images or transcripts for audio and video content. This practice promotes inclusivity and enhances the user experience for all.