Don't leave table headers empty

Data tables effectively organize complex information in a structured format. While simple tables without headers may seem clear to visual users, they create significant barriers for those using assistive technologies who rely on these headers for context.

To ensure accessibility, always include text in every table header cell. This includes the often-overlooked top-left cell that may appear unnecessary in visual layouts but provides crucial orientation information for screen reader users.

Headers establish relationships between data cells and create a framework that helps users understand how information connects. Without proper headers, assistive technology users cannot determine what values relate to which categories, making the data effectively unusable.