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Re: Investigating the proposed alt attribute recommendations in HTML 5

From: Steve Faulkner <sfaulkner@paciellogroup.com>
Date: Thu, 30 Aug 2007 09:26:51 +0100
Message-ID: <55687cf80708300126p605f2dd5ic717931816ecb83d@mail.gmail.com>
To: "Maciej Stachowiak" <mjs@apple.com>
Cc: HTMLWG <public-html@w3.org>, wai-xtech@w3.org
Maciej wrote:
>It looks like the flickr page you tested is a search, which doesn't include
the title or caption. What about a page like this (I found it from the
>example you used), where the titles are included, and are duplicated by the
alt text:

>http://www.flickr.com/photos/11994078@N04/

If we look at the page you provided, we still have the same issue, a choice
between a duplicate text title being announced for each image when the page
is read using

case 1 - user uses The JAWS read all command:

For a text, & alt pair the screen reader would announce
with the title repeated as the alt


"Sgt.Pepper and Robinone
Link Graphic Sgt.Pepper and Robinone "


with no alt attribute


 "Sgt.Pepper and Robinone
  Link Graphic  slash one billion two hundred thirty-seven million eight
hundred seventy-four thousand two hundred ninety-three underline eight
dfcdzerocbfe underline t.jpg"

which is preferable?

if a null alt text is used (alt="")
the result is the same as for no alt attribute, because the image is the
sole content of the link.



case 2 - If the user employed the common navigation method of tabbing
through the page:

when the user tabbed to a photo link with  alt text:


"Link Graphic Sgt.Pepper and Robinone"

when the user tabbed to a photo link without an  alt attribute:

"Link Graphic  slash one billion two hundred thirty-seven million eight
hundred seventy-four thousand two hundred ninety-three underline eight
dfcdzerocbfe underline t.jpg"

which is preferable?

>Based on what you said about JAWS, it sounds like alt="" might give the
best results in that version of JAWS.

Could you clarify? are you referring to the example page you provided or the
page i used?

>might give the best results in that version of JAWS

The results i described are good for JAWS versions 6.2+, they may be the
same for earlier version i didn't check. Window eyes behaviour is similar
(as noted in the article)

>http://www.flickr.com/photos/11994078@N04/

Thanks for providing another example page I will test and update the
article.

On 29/08/2007, Maciej Stachowiak < mjs@apple.com> wrote:

>
>  On Aug 29, 2007, at 11:48 AM, Steven Faulkner wrote:
>
>  If the developers of flickr.com or Photobucket were to implement the
> recommendations regarding the omission of the alt attribute within the
> current HTML 5 draft what are the potential effects upon the accessibility
> of the sites for users of assistive technology such as screen readers?
>
> Investigating the proposed alt attribute recommendations in HTML 5 -
> http://www.paciellogroup.com/resources/articles/altinhtml5.html
>
>
>
> It looks like the flickr page you tested is a search, which doesn't
> include the title or caption. What about a page like this (I found it from
> the example you used), where the titles are included, and are duplicated by
> the alt text:
>
>
> http://www.flickr.com/photos/11994078@N04/
>
>
> Based on what you said about JAWS, it sounds like alt="" might give the
> best results in that version of JAWS.
>
>
> Regards,
> Maciej
>
>
>
> --
> with regards
>
> Steve Faulkner
> Technical Director - TPG Europe
> Director - Web Accessibility Tools Consortium
>
> www.paciellogroup.com | www.wat-c.org
> Web Accessibility Toolbar -
> http://www.paciellogroup.com/resources/wat-ie-about.html
>
>
Received on Thursday, 30 August 2007 08:26:57 GMT

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