Accessibility Support
Out of the box, the Telerik and Kendo UI PDFViewer provides extensive accessibility support and enables users with disabilities to acquire complete control over its features.
The PDFViewer is compliant with the Web Content Accessibility Guidelines (WCAG) 2.2 standards and Section 508 requirements, follows the Web Accessibility Initiative - Accessible Rich Internet Applications (WAI-ARIA) best practices for implementing the 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.
The PDFViewer component contains two inner elements - a toolbar and a page container.
| Selector | Attribute | Usage |
|---|---|---|
.k-pdfviewer .k-canvas | tabindex=0 | Defines the focusable page container element. |
aria-label | Describes the purpose of the focusable container. Translatable message. | |
role=document | Defines that content should be evaluated in reader mode by assistive technologies. | |
.k-pdfviewer .k-toolbar .k-button:has(.k-svg-i-search, .k-i-search) | aria-haspopup=dialog | Describes that the Search tool button opens a dialog element. |
.k-pdfviewer .k-canvas .k-search-panel | role=dialog | Describes the role of the Search panel. |
aria-label | Translatable message, same label as the one, used to describe the Toolbar Search tool. |
Managing the Focus
The PDFViewer integrates the Toolbar component and inherits all shortcuts from it. So, the component has two tab stops - one the toolbar and one the page container.
Keyboard Shortcuts
Page Container
The page container implements all default shortcuts for a scrollable region.
| Shortcut | Behavior |
|---|---|
Up Arrow | Scrolls up the container. |
Down Arrow | Scrolls down the container. |
PageUp | Scrolls up the container. |
PageDown | Scrolls down the container. |
Shift + Tab | Returns focus to the toolbar. |
Testing
The PDFViewer has been extensively tested automatically with axe-core and manually with the most popular screen readers.
Screen Readers
The PDFViewer has been tested with the following screen readers and browsers combinations:
| Environment | Tool |
|---|---|
| Firefox | NVDA |
| Chrome | JAWS |
| Microsoft Edge | JAWS |
