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While longdesc was designed to be used by screen readers to display image information for computer users with accessibility issues, such as the blind or visually impaired, it is actually seldom used for this purpose, because there are relatively few authors who use the attribute, and most of those authors use it incorrectly.
<img src="Hello.jpg" longdesc="description.html">
... <p>This is an image of a two-layered birthday cake.</p> ...
Linking to the long description in the text
Since very few browsers and screen readers do make the link available at all, it is advisable to include a link to the description page near the
<img src="Hello.jpg" longdesc="description.html"> [<a href= "description.html" title="long description of the image">D</a>]
- ↑ "Objects, Images, and Applets". W3C. http://www.w3.org/TR/REC-html40/struct/objects.html. Retrieved 2008-12-20.
- ↑ "Creating Accessible Images". WebAim. http://www.webaim.org/techniques/images/longdesc.php#longdesc. Retrieved 2008-12-20.
- ↑ http://wiki.whatwg.org/wiki/Longdesc_usage
- ↑ http://www.whatwg.org/html5/#attr-img-longdesc
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