If a picture is worth a thousand words, what is it worth to people who cannot see? In our digital world, it is easy for people with a visual disability to miss critical information or have a frustrating and negative experience. Imagine, for example, that a keynote speaker sends out their presentation after a conference. The presentation contains infographics to illustrate a key point. Without descriptions of the infographics, anyone with a visual disability cannot understand the infographic and misses out on key information.
Alternative text (alt text) is descriptive text which conveys the meaning and context of a visual item in a digital setting, such as on an app or web page. When screen readers such as Microsoft Narrator, JAWS, and NVDA reach digital content with alt text, they will read the alt text aloud, allowing people to better understand what is on the screen. Well-written, descriptive alt text dramatically reduces ambiguity and improves user experience.
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