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For example, the alt attribute on an institution's logo should convey that it is the institution's logo instead of describing details of what the logo looks like. [3] [4] On Wikipedia, alt text is provided in the alt parameter in the MediaWiki markup. Many templates, like {}, have parameters for specifying alt text. For images that link to ...
Alternative text (or alt text) is text associated with an image that serves the same purpose and conveys the same essential information as the image. [1] In situations where the image is not available to the reader, perhaps because they have turned off images in their web browser or are using a screen reader due to a visual impairment, the alternative text ensures that no information or ...
A text-based web browser such as Lynx will display the alt text instead of the image (or will display the value attribute if the image is a clickable button). [13] A graphical browser typically will display only the image, and will display the alt text only if the user views the image's properties, or has configured the browser not to display ...
"Portrait of Napoleon" would be a good alt text in the Amazing Race example. However, because Wikipedia is an educational website, and because of its unique situation in relation to image attribution, its requirements for alt text are somewhat different from most sites.
This would not be good alt text in an article, but it's a different matter. "Napoleon leaning on a bureau laden with papers" Brief alt text like that is appropriate for the first context mentioned in WP:ALT #Proper names for that image. However, Slp1 is right: it's not enough for the second context, the lead image of Napoleon. In the second ...
The page is titled "Alternative text for images". The focus should be on alt text examples and how to properly write alt text, not on what alt text sounds like in screen readers, and I disagree that they were difficult to apply, the more examples you have to learn from the easier it is, at least for me. -- œ ™ 22:26, 31 December 2010 (UTC)
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Alt text for diagrams would often be a nightmare, for example File:Arthropod head problem 01.png would need alt text almost as long and complex as a summary of the Arthropod head problem, File:Mollusc generalized.png would need alt text about as long as the description of basic mollusc anatomy, File:Porifera cell types 01.png would need alt ...