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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 ...
Many templates, like {}, have parameters for specifying alt text. For images that link to their description page (most images on Wikipedia), the alt parameter should not be blank, nor should the alt parameter be absent. A screen reader will default to reading out the image filename when no alt text is available.
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 ...
Alt text is intended for visually impaired readers. Often the caption or article will describe the image adequately, and where this is the case you can write alt=caption or alt=see adjacent text. If additional alt text is added, it should be a succinct description that complies with the content policies; see WP:ALT for more
Zero or more of these options may be specified to control the alt text, link title, and caption for the image. Captions may contain embedded wiki markup, such as links or formatting. See Wikipedia:Captions for discussion of appropriate caption text. See Wikipedia:Alternative text for images for discussion of appropriate alt text. Internet ...
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)
It correctly identifies that on Wikipedia the usual advice for blank alt text is undesirable and provides similar advice to our Water Fluoridation example. It stresses that the fact that our images link to image-description pages shouldn't affect what we write for alt text, though it does affect the fact that we then have to write some alt text ...
This ensures that screen readers will read, and the mobile site will display, the image (and its textual alternative) in the correct section. This guideline includes alt text for LaTeX-formatted equations in <math> mode. See Wikipedia:Manual of Style/Mathematics § Alt text. Do not insert images in headings; this includes icons and <math ...