Glossary
Searchable terminology from accessibility, web standards, and related fields.
5 results found in alt text.
- Alt Text Authoring (Alt Text Writing, Image Description Authoring)
- The process of composing alternative text descriptions for digital images, undertaken by content authors, developers, or dedicated accessibility specialists. Research has identified several barriers t…
- Automatic Alt Text (AI-generated Alt Text, Auto Alt Text, Machine-generated Alt Text)
- Alternative text for images that is automatically generated by artificial intelligence systems using computer vision and natural language processing. Platforms like Microsoft PowerPoint, Facebook, and…
- Decorative Image (Decorative Graphic, Presentational Image)
- An image that serves a purely aesthetic or visual design purpose and does not convey meaningful information to the user. According to WCAG guidelines, decorative images should receive empty alt text (…
- Long Description (Extended Description, longdesc)
- A detailed textual description of an image or other non-text content that goes beyond the brief summary provided by alt text. Long descriptions are used for complex images such as charts, diagrams, in…
- Semantic Level (Semantic Content Level, Alt Text Semantic Level)
- A framework for categorizing the depth of information conveyed in alt text descriptions of data visualizations, introduced by Lundgard and Satyanarayan. The four levels are: Level 1 (construction deta…