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Blazor ProgressBar Accessibility

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

The ProgressBar 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.

Selector Attribute Usage
.k-progressbar role=progressbar Sets the proper role for ProgressBar.
aria-label or aria-labelledby The Progressbar needs an accessible name to be assigned to it.
aria-valuenow Only present and required if the value is not indeterminate. Set to a decimal value between 0, or aria-valuemin if present, and aria-valuemax indicating the current value of the progress bar.
aria-valuemin Set to a decimal value representing the minimum value, and less than aria-valuemax. If not present, the default value is 0.
aria-valuemax Set to a decimal value representing the maximum value, and greater than aria-valuemin. If not present, the default value is 100.


WAI-ARIA specification for progressbar

MDN reference for the progressbar role

Section 508

The ProgressBar is fully compliant with the Section 508 requirements.


The ProgressBar 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 ProgressBar 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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