Wrapper

In web accessibility and data extraction contexts, a reusable program that maps the visual layout of a web page to its underlying structured dataset by identifying records and fields within the HTML. Wrappers reverse the rendering process, extracting semantic structure from visually-arranged content. For accessibility, wrappers can transform datasets that lack proper semantic HTML markup into navigable table structures that screen readers can present using table navigation commands, bridging the gap between visual presentation and non-visual access.