Accessible Data Table

A data table designed and implemented to be effectively navigable and comprehensible by screen reader users. Accessible data tables require proper HTML markup including table headers (th elements), scope attributes to associate headers with data cells, captions describing the table's purpose, and summary information for complex tables. For data visualizations, data tables provide an alternative modality that gives screen-reader users granular access to underlying data values rather than relying solely on alt-text summaries. However, data tables present their own accessibility challenges: screen readers navigate them linearly (row by row or cell by cell), which can cause cognitive overload with large datasets and makes it difficult to track column headers. Customizable sorting and filtering of table data can significantly improve the screen reader experience.