Definition
Image Alt Text
Text that describes an image for accessibility and fallback contexts.
Definition
Alt text is an HTML attribute that gives a text alternative for an image.
Meaning
It helps screen reader users understand meaningful images and appears when images fail to load.
Why It Matters
Good alt text improves accessibility, image context, and content quality. Missing alt text can make important visual information unavailable.
History And Context
The alt attribute has been part of HTML for decades and remains a core accessibility requirement for meaningful images.