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Blazor Slider Accessibility

Out of the box, the Telerik UI for Blazor Slider provides extensive accessibility support and enables users with disabilities to acquire complete control over its features.

The Slider is compliant with the Web Content Accessibility Guidelines (WCAG) 2.2 AA 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.


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

Slider Drag Handle

Selector Attribute Usage
.k-draghandle role=slider Sets the proper role for Slider.
aria-label or aria-labelledby or title The Slider needs an accessible name to be assigned to it.
aria-valuetext Specifies the text that would be announced based on the currently selected value in the Slider.
aria-readonly=true Attribute is rendered only when the Slider is readonly.
aria-invalid=true Attribute is rendered only when the Slider is in form and announces the valid state of the component.
tabindex=0 The element must be focusable.
.k-draghandle:not(.k-hsv-draghandle) aria-valuenow Specifies the currently selected value in the Slider.
aria-valuemin Specifies the minimum available value in the Slider.
aria-valuemax Specifies the maximum available value in the Slider.
.k-slider-vertical .k-draghandle aria-orientation=vertical Present only when slider is vertical.
.k-disabled .k-draghandle aria-disabled=true Attribute is rendered only when the Slider is disabled.

Note that using an <a> element for role="slider" is not allowed.

Slider Buttons

When present, the Slider Buttons must implement the specification for the Button component.

Button accessibility specification


WAI-ARIA specification for slider

Section 508

The Slider is fully compliant with the Section 508 requirements.


The Slider has been extensively tested automatically with axe-core and manually with the most popular screen readers.

To report any accessibility issues, contact the team through the Telerik Support System.

Screen Readers

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

Environment Tool
Firefox NVDA
Chrome JAWS
Microsoft Edge JAWS

See Also

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