Use simple tables
Many screen readers still struggle with complex tables containing merged cells or multiple header levels. These assistive technologies may announce cell relationships incorrectly or fail to maintain proper orientation within complicated structures.
Even when screen readers technically support complex tables, non-visual users face significant cognitive load trying to mentally map and retain relationships between scattered data points. Simpler table structures with clearly defined rows, columns, and single-level headers allow all users to navigate and comprehend information more efficiently, regardless of how they access content.
Pro Tip: When complex data relationships can't be avoided, consider breaking information into multiple simple tables with clear relationships rather than creating one complex table with merged cells.
