Accessibility Annotation

External metadata added to a web page to describe its visual layout structure, content groupings, and element roles for the purpose of improving accessibility without modifying the original page. Accessibility annotations typically identify visually distinct groups on a page, assign titles and importance levels to each group, and provide information that enables transcoding systems to rearrange, label, and structure the page for non-visual access. Annotations can be stored in external databases and applied at access time through proxy-based transcoding systems, allowing third parties to improve the accessibility of websites they do not control. This approach is an alternative to waiting for content authors to fix accessibility issues directly in their HTML.