Forum Moderators: Robert Charlton & goodroi
[edited by: tedster at 10:08 pm (utc) on Mar 3, 2011]
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.
<!-- Using <figure> and <figcaption> -->
<p>The network passes data to the Tokenizer stage, which
passes data to the Tree Construction stage. From there, data goes
to both the DOM and to Script Execution. Script Execution is
linked to the DOM, and, using document.write(), passes data to
the Tokenizer.</p>
<figure>
<img src="http://dev.w3.org/html5/spec/images/parsing-model-overview.png" alt="The Network leads
to the Tokenizer, which leads to the Tree Construction. The Tree
Construction leads to two items. The first is Script Execution, which
leads via document.write() back to the Tokenizer. The second item
from which Tree Construction leads is the DOM. The DOM is related to
the Script Execution.">
<figcaption>Flowchart representation of the parsing model.</figcaption>
</figure>
!-- This is WRONG. Do not do this. Instead, do what the above examples do. -->
<p>The network passes data to the Tokenizer stage, which
passes data to the Tree Construction stage. From there, data goes
to both the DOM and to Script Execution. Script Execution is
linked to the DOM, and, using document.write(), passes data to
the Tokenizer.</p>
<p><img src="http://dev.w3.org/html5/spec/images/parsing-model-overview.png"
alt="Flowchart representation of the parsing model."></p>
A screenshot in a gallery of screenshots for a new OS, with some alternative text:
<figure>
<img src="KDE%20Light%20desktop.png"
alt="The desktop is blue, with icons along the left hand side in
two columns, reading System, Home, K-Mail, etc. A window is
open showing that menus wrap to a second line if they
cannot fit in the window. The window has a list of icons
along the top, with an address bar below it, a list of
icons for tabs along the left edge, a status bar on the
bottom, and two panes in the middle. The desktop has a bar
at the bottom of the screen with a few buttons, a pager, a
list of open applications, and a clock.">
<figcaption>Screenshot of a KDE desktop.</figcaption>
</figure>
Are Image Theft and Hotlinks Creating an Algo Disaster?
There are plenty of folks who are not happy with that decision.
Remember, the text alternative takes up visual display space and may interfere with surrounding text.