Accessibility

SuperDoc provides accessibility features for keyboard navigation and screen reader compatibility.

High contrast mode

Enable high contrast for improved visibility:

// During initialization
const superdoc = new SuperDoc({
  selector: '#editor',
  document: 'contract.docx',
  onReady: ({ superdoc }) => {
    superdoc.setHighContrastMode(true);
  }
});

// Or after initialization
superdoc.setHighContrastMode(true);

Responsive layout (WCAG AA Reflow)

SuperDoc supports WCAG 2.1 Success Criterion 1.4.10 (Reflow) through the web layout mode:

const superdoc = new SuperDoc({
  selector: '#editor',
  document: 'contract.docx',
  viewOptions: { layout: 'web' }
});

This enables:

• Content reflows to fit any viewport width (down to 320px)
• No horizontal scrolling required
• Document structure (headings, lists, tables) remains intact
• Ideal for mobile devices and responsive web applications

If you also need layout-engine-powered features such as proofing in web layout, set layoutEngineOptions.flowMode: 'semantic'.

Keyboard navigation

Toolbar navigation

Navigate the toolbar without a mouse:

• Tab - Move between toolbar groups (left, center, right)
• Arrow keys - Navigate within a group
• Enter - Activate button or open dropdown
• Escape - Close dropdowns

Return to toolbar

Jump back to toolbar from anywhere in the document:

• Windows: Ctrl + Shift + Alt + M
• macOS: Cmd + Shift + Option + M

Document navigation

Standard keyboard shortcuts work as expected:

• Tab - Move to next field/element
• Shift+Tab - Move to previous field/element
• Ctrl/Cmd + Arrow keys - Navigate by word
• Home/End - Beginning/end of line
• Ctrl/Cmd + Home/End - Beginning/end of document

Screen reader support

ARIA implementation

SuperDoc uses semantic ARIA roles for screen readers:

Role	Element	Purpose
application	Main container	Identifies the editor application
document	Editor area	Document editing region
toolbar	Toolbar component	Formatting controls
button	Toolbar buttons	Individual controls
menuitem	Dropdown items	Menu options
menu	Dropdowns	Option containers
separator	Dividers	Visual/logical separation

ARIA attributes

• aria-label - Describes the current focused item
• aria-description - Provides additional context
• aria-pressed - Indicates toggle button state
• aria-expanded - Shows dropdown state

Semantic HTML

Tables and lists use standard HTML elements that are accessible by default:

<!-- Tables with proper headers -->
<table>
  <thead>
    <tr>
      <th>Column Header</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Data Cell</td>
    </tr>
  </tbody>
</table>

<!-- Semantic lists -->
<ul>
  <li>List item with meaning</li>
</ul>

Focus management

• Focus indicators visible on all interactive elements
• Tab order follows logical document flow
• Focus trapped in modals/dropdowns when open
• Focus returns to trigger element when modals close

Known limitations

• Complex tables may require additional navigation
• Some advanced formatting options only accessible via toolbar
• Custom keyboard shortcuts not yet configurable

Testing your implementation

// Check if high contrast is enabled
if (superdoc.isHighContrastMode) {
  console.log('High contrast active');
}

// Ensure toolbar is keyboard accessible
document.querySelector('.super-toolbar').setAttribute('tabindex', '0');

Browser compatibility

Accessibility features tested with:

• NVDA (Windows)
• JAWS (Windows)
• VoiceOver (macOS)
• Chrome, Firefox, Safari, Edge (latest versions)