Accessible Description Calculation

• Section 5: Providing Accessible Names and Descriptions
• Accessible description is a string that provides more information about a image, form control, link or ARIA widget.
• Screen readers each have their own ways of rendering and sometimes ignoring the description information information.

Accessible Description Techniques

Priority	Technique	Description
1	aria-describedby	Creates a string description of an item on the web page, typically called the Accessible Description in the accessibility API. The aria-describedby attribute contains a list of IDREFs to elements on the page. Text content of referenced elements are concatenated to compute the accessible description. Designed to reference visible text on the screen, like instructions and error feedback.
2	title	Creates a string description of an item on the web page, typically called the Accessible Description in the accessibility API. If no other source of an accessible description is found and the element has a title attribute that is not being used to define an accessible name, the content of the title attribute is used to define the accessible description.
ARIA 1.3 (future)	aria-description	Similar to aria-label attribute, text content is used to define an accessible description. The aria-description attribute is in the current editors working draft for ARIA 1.3.