# The “rowheader” role is unnecessary for element “th”.

> Canonical HTML version: https://rocketvalidator.com/html-validation/the-rowheader-role-is-unnecessary-for-element-th
> Attribution: Rocket Validator (https://rocketvalidator.com)
> License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

A `<th>` at the start of a data row already has the implicit role `rowheader`, so adding `role="rowheader"` to it changes nothing for screen readers.

The browser gives each `<th>` its ARIA role based on where the cell sits in the table. Header cells in the `<thead>`, or in a top row of headers, become `columnheader`. A header cell followed by `<td>` cells in the same row becomes `rowheader`. Add `scope="row"` when you want to state the direction outright: it marks the cell as the header for the rest of its row. The role attribute repeats information the table structure already carries and only makes the markup longer.

You'll get this warning for `role="rowheader"` on every `<th>`, whatever its position. If the cell actually heads a column, for example a `<th>` inside `<thead>`, the role is also incorrect: it replaces `columnheader`, so screen readers announce the cell as the label of a row.

Expect an error alongside the warning in most tables. A `<th>` can't carry any `role` attribute when its `<table>` has no `role` of its own, or has `role="table"`, `role="grid"` or `role="treegrid"`. Deleting `role="rowheader"` clears the warning and the error together.

Table plugins and page builders tend to put a role on every row and cell. The `rowheader` role is for tables built from generic elements such as `<div>` or `<span>`, which have no native way to mark a cell as a row header. On a `<th>`, remove the attribute and keep `scope="row"`. If the same table also sets roles on its `<tr>`, `<td>` or `<tbody>` elements, the validator flags those too, so remove them in the same change.

## Invalid example

```html
<table>
  <thead>
    <tr>
      <th scope="col">Plan</th>
      <th scope="col">Monthly price</th>
      <th scope="col">Storage</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <th scope="row" role="rowheader">Basic</th>
      <td>$5</td>
      <td>10 GB</td>
    </tr>
    <tr>
      <th scope="row" role="rowheader">Team</th>
      <td>$20</td>
      <td>100 GB</td>
    </tr>
  </tbody>
</table>
```

## Valid example

```html
<table>
  <thead>
    <tr>
      <th scope="col">Plan</th>
      <th scope="col">Monthly price</th>
      <th scope="col">Storage</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <th scope="row">Basic</th>
      <td>$5</td>
      <td>10 GB</td>
    </tr>
    <tr>
      <th scope="row">Team</th>
      <td>$20</td>
      <td>100 GB</td>
    </tr>
  </tbody>
</table>
```