Here’s a more detailed explanation:
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When to use it:Long descriptions are valuable for conveying information from complex visuals like diagrams, maps, charts, and graphs. They are also useful for artistic images where the viewer is intended to interpret the image, according to Western Washington University.Â
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What it includes:A long description can be several paragraphs long and might include tables, lists, or other structured elements to convey spatial information or other relevant details.Â
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How it differs from alt text:Alt text provides a brief description of an image, often acting as a link or a concise summary. Long descriptions are more extensive and provide more detail about the visual, especially when the image conveys complex information.Â
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Accessibility:Long descriptions are important for accessibility, making complex visuals understandable to users who may have difficulty seeing or interpreting them, according to the Web Accessibility Initiative.Â
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Examples:A long description of a graph might describe the trends, axes labels, and key points, says a blog post on Accessible Social. A long description of a diagram might explain the components, relationships, and functions, according to a blog post on Penn State Accessibility.Â
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