table-duplicate-name

Table caption must not duplicate its summary attribute

Checks that a <table>'s <caption> text is not identical to its (deprecated) summary attribute.

Applies to. Applies to <table> elements that have both a <caption> with text content and a (deprecated but still encountered) summary attribute.

Expectation. The caption text and the summary attribute text are not identical (case-insensitive, normalized). When both are present and say the same thing, assistive technology that surfaces both announces the same text twice for one table.

Examples

<table summary="Sales data">
  <caption>Sales data</caption>
  <tr><td>1</td></tr>
</table>

<table summary="Data collected in fiscal year 2025">
  <caption>Sales data</caption>
  <tr><td>1</td></tr>
</table>

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