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Re: Figures, ALT text and lightboxes

for

From: Bernard de Broglio
Date: Feb 7, 2016 1:24PM

Thank you Steve, that was very helpful.

We -can- provide a text alternative for the image, but it would be essentially the same as the caption.

My concern was that a screen reader would read the caption twice.

(The images are historic photos of urban locations. The caption names the place with a brief description.)

-----Original Message-----
From: Steve Faulkner [mailto: <EMAIL REMOVED> ]
Sent: Monday, 8 February 2016 1:21 AM
To: WebAIM Discussion List < <EMAIL REMOVED> >
Subject: Re: [WebAIM] Figures, ALT text and lightboxes

Hi Bernard

If an image is the subject of a figure and an alt text is not provided it must not have an empty alt (alt=""). The circumstances where it is conforming to have an image in a figure without an alt text are quite restrictive, refer to https://www.w3.org/TR/html5/embedded-content-0.html#when-a-text-alternative-is-not-available-at-the-time-of-publication

data-url is a custom attribute that does not act as a link, it's semantics have no meaning outside of the scripting/software it has been designed for and so will be ignored.

This is acceptable if no text alternative can be provided

<figure data-url="URL">
<p><img src="IMAGE_URL"></p>
<figcaption>
<p>CAPTION</p>
</figcaption>
</figure>


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