Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Accelerated Speech(also: Time-Compressed Speech, Speed-Up Speech)
- Audio output played at faster than normal speaking rate, commonly used by people with visual impairments when interacting with screen readers and other audio-based assistive technologies. Research shows that experienced screen reader users can comprehend speech at up to 500…
- Accessible Name(also: Accessible Label, Acc Name)
- The text string that assistive technologies such as screen readers use to identify and announce a user interface element. The accessible name is computed by browsers following the W3C's Accessible Name and Description Computation algorithm, which checks a priority-ordered…
- Alt Text(also: Alternative Text, Alt Attribute, Image Description)
- A textual description of an image that is embedded in the HTML code and read aloud by screen readers, providing blind and low vision users with information about visual content. Effective alt text is concise, descriptive, and context-appropriate — a decorative image may need…
- Aria-Live(also: ARIA Live Region, Live Region)
- An ARIA attribute (aria-live) used to designate regions of a web page whose content may change dynamically, ensuring that assistive technologies announce updates to users without requiring them to navigate to the changed content. The attribute accepts values of "polite" (waits…
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