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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 ...
The alternative text serves the same purpose as the image. [1] On the web, alt text is supplied through the alt attribute. The World Wide Web Consortium (W3C) guidelines state that an image's alt attribute should convey meaning, rather than a literal description of the image itself. [2]
Uploaded a work by AHollender (WMF) from Wikimedia Mobile Apps Designer App screens contain images currently used on Wikipedia: File:Hausziege 04.jpg, Photographer: Armin Kübelbeck, CC-BY-SA, Wikimedia Commons File:1962-03-24_Sebring_Dino_248_SP_0806_Fulp_Ryan.jpg, public domain. with UploadWizard
The alt text for an imagemap region is always the same as its title text; the alt text for the overall image is given in the first line of the imagemap's markup. The underlying image's native dimensions are 3916 × 1980, and the coordinates are given in these dimensions rather than in the 300px resizing.
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 ...
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 ...
Yes, it should be reworded. The point is, for images such as File:Proteinsynthesis.png alt text is crucial to understand the content of the article (where this image is inserted). Alt text is needed when the image contains an information that is important to understand the subject of the article.
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