Glossary

A comprehensive website monitoring glossary of accessibility terms.

What is aria-labelledby?

aria-labelledby is an ARIA attribute that builds an accessible name from other elements' text. Compare aria-label vs. aria-labelledby, plus an HTML example.

What is digital accessibility?

Wondering what digital accessibility is and why digital accessibility is important? Here's the definition, standards, examples, and best practices.

What is a braille display?

Wondering, “What is a braille display?” It converts on-screen text into raised braille dots so blind and low-vision users can read digital content.

What is a11y?

A11y is the numeronym for accessibility: a shorthand for building digital products that work for people with disabilities.

What is alt text?

Wondering what alt text is? It's the description behind an image that screen readers announce and search engines use for context – see examples.

What is aria-label?

An ARIA label is an HTML attribute that gives screen readers an accessible name. Here's what an aria label is, an example, and best practices.

What is aria-hidden?

aria-hidden is an ARIA attribute that hides content from screen readers without hiding it visually. Here's what it does, an example, and common mistakes.