Per w3.org, where needed, the alt attribute should be supplemented with the longdesc attribute.
Web Content Accessibility Guidelines 1.0
Objects, Images, and Applets in HTML documents
Techniques for Web Content Accessibility Guidelines 1.0
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There's the rub with alt and title, the gray area leaves so much room for conflicting interpretation. Even the browser makers can't agree. Where does that leave us?
Gaming the system by using the alt attribute for SEO is creating a new paradigm for usage, but I think we are all better off to stay as close to the W3C spec and the WCAG recommendation as possible. Use alt to describe the image (or cite the text in the image), longdesc to provide substantive information with direct reference to the image, and title to describe the action and / or target of an actionable object.
So in essence it would be right to format a linked img tag as follows?
Code:<a href="thisplace.com"> <img src="http://www.webproworld.com/images/mylogo.gif" alt="Logo" title="My Site Homepage" longdesc="Click here to get to my homepage" /> </a>
The title attribute might better serve its purpose by being placed in the anchor tag, instead. In this case, I would set alt="".
"My Site Homepage" is a little more wordy than "Home", which most users are familiar with.
The value for longdesc must be a url as in, longdesc="mount-rushmore.html".
going in circles, again...
Related Post: http://www.webproworld.com/webmaster...tml#post445510
It would seem that my testing produced results that conclude the title attribute on the image is the one everyone will see. If it is on the anchor, then it has to be completely removed from the image.
For all parties concerned,everyone should see "Home" in the tool tip.HTML Code:<a href="#" title="target or target page title"><img src="" alt="" title="Home" width="" height="" /></a>
LINK: Objects, Images, and Applets in HTML documents
The resource at the other end of the link contains the substantive information, not the attribute.longdesc = uri [CT]
This attribute specifies a link to a long description of the image. This description should supplement the short description provided using the alt attribute. When the image has an associated image map, this attribute should provide information about the image map's contents. This is particularly important for server-side image maps. Since an IMG element may be within the content of an A element, the user agent's mechanism in the user interface for accessing the "longdesc" resource of the former must be different than the mechanism for accessing the href resource of the latter.
Support of this attribute is spotty, and typically, the same url is used in an accompanying link, with link text "d." or "D."
The point being what?