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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]
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 ...
[10] [11] The alt attribute is intended to be used for short and concise descriptions of the image. Longer descriptions can be given using the longdesc attribute, which provides more detailed information and complements but does not replace the alt attribute. [2] A screen reader such as Orca will read out the alt text in place of the image. [12]
The code alt="" with two quotes produces an alt text with two quotes. The code "alt=" (without the quotes) is exactly the same as not specifying the alt text at all. The problem is that alt text is needed when an image contains a link, but some images don't really need alt text because the captions are informative enough.
All text content is licensed under the Creative Commons Attribution-ShareAlike 4.0 License (CC-BY-SA), and most is additionally licensed under the GNU Free Documentation License (GFDL). [1] Images and other files are available under different terms, as detailed on their description pages.
An image description is a form of text-based description referring to the characteristics of an image. Alt text presents visual information via text (usually encoded in HTML code), primarily to aid blind people using screen readers so they may have access and interact with the visual.
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Some editors in a discussion at the GAN talk page on incorporating MOS:ACCESS into the GACR have pointed out that the instructions in this essay are a bit contradictory. In particular, the example alt text given for the Napoleon image in the lead is redundant per the instructions in the final paragraph of the lead, which states that something like |alt=painting should be used, the instructions ...