@progress/wct-a11y-spec/dist/mvccore/aria/captcha_aria.md

Contains accessibility and keyboard navigation specification of Telerik and Kendo web components.

Out of the box, the {{ site.product }} Captcha provides extensive accessibility support and enables users with disabilities to acquire complete control over its features.


The Captcha is compliant with the [Web Content Accessibility Guidelines (WCAG) 2.2 AA](https://www.w3.org/TR/WCAG22/) standards and [Section 508](https://www.section508.gov/) requirements, follows the [Web Accessibility Initiative - Accessible Rich Internet Applications (WAI-ARIA)](https://www.w3.org/WAI/ARIA/apg/) best practices for implementing the [keyboard navigation](#keyboard-navigation) for its `component` role, provides options for managing its focus and is tested against the most popular screen readers.

## WAI-ARIA


This section lists the selectors, attributes, and behavior patterns supported by the component and its composite elements, if any.


No role attribute is implemented as the  `html input type="text"` element is sufficient for definining purpose of the component.

| Selector | Attribute | Usage |
| -------- | --------- | ----- |
| `.k-captcha-image>img` | `alt` | The Captcha image must have an `alt` tag, so that the. |
| `.k-captcha-image-controls>.k-button` | `role=button` or `nodeName=button` | The image control buttons must have an appropriate role. |
|  | `aria-label` or `title` | Each button must have an accessible name as they are all represented by icons and no text is available in their contents. |
| `.k-captcha-input .k-input-inner` | `role=textbox` or `nodeName=input` | Describes the role of the component. |
|  | `label for` or `aria-label` or `aria-labelledby` | The input needs an accessible name to be assigned to it. |
|  | `aria-invalid=true` | Attribute is rendered only when the captcha is in form and announces the valid state of the component. |
| `.k-disabled .k-input-inner` | `disabled=disabled` or `aria-disabled=true` | Attribute is rendered only when the textbox is disabled. |
| `.k-captcha-input>input` | `type=hidden` | The hidden input holding the Captcha ID value so that the remote could validate the user input. |

## Resources

[WAI-ARIA specification for textbox](https://www.w3.org/TR/wai-aria-1.2/#textbox)

## Section 508


The Captcha is fully compliant with the [Section 508 requirements](http://www.section508.gov/).

## Testing


The Captcha has been extensively tested automatically with [axe-core](https://github.com/dequelabs/axe-core) and manually with the most popular screen readers.

> To report any accessibility issues, contact the team through the [Telerik Support System](https://www.telerik.com/account/support-center).

### Screen Readers


The Captcha has been tested with the following screen readers and browsers combinations:

| Environment | Tool |
| ----------- | ---- |
| Firefox | NVDA |
| Chrome | JAWS |
| Microsoft Edge | JAWS |