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Re: clear text image descriptions and alt text with user-created content

for

From: Steve Faulkner
Date: Mar 20, 2012 11:36AM

hi ryan, the hope is that other browsers will implement it in the same way
so that its interoperable.

regards
steve

On 20 March 2012 17:28, Ryan E. Benson < <EMAIL REMOVED> > wrote:

> Steve,
>
> > In firefox the figcaption element is mapped to the IA2 accessibility API
> > caption role, so screen readers can identify to users what caption text
> is
> > once they have implemented support.
> Do you know what other browsers are planning to do?
>
> --
> Ryan E. Benson
>
>
>
> On Tue, Mar 20, 2012 at 1:19 PM, Steve Faulkner
> < <EMAIL REMOVED> > wrote:
> > Hi Ryan,
> >
> >> I wonder if there was a way to tell here is the end of the caption
> > semantically.
> >
> > In firefox the figcaption element is mapped to the IA2 accessibility API
> > caption role, so screen readers can identify to users what caption text
> is
> > once they have implemented support.
> >
> > regards
> > steve
> >
> > On 20 March 2012 17:11, Ryan E. Benson < <EMAIL REMOVED> > wrote:
> >
> >> Steve,
> >>
> >> > Until such times I have suggested a pattern in examples in HTML5:
> >> > Techniques for providing useful text alternatives
> >> > http://dev.w3.org/html5/alt-techniques/#sec12
> >> > http://dev.w3.org/html5/alt-techniques/#m6
> >> I like example C in Alt Techniques #m6, and example B in #sec12. I
> >> wonder if there was a way to tell here is the end of the caption
> >> semantically. It took me a minute to figure out why you put (Photo 1)
> >> at the end of the caption, then I realized by putting the alt text
> >> again at the end, it would signal the end of the caption, such as when
> >> people say start/end quote on the news.
> >>
> >> --
> >> Ryan E. Benson
> >>
> >>
> >>
> >> On Tue, Mar 20, 2012 at 10:38 AM, Steve Faulkner
> >> < <EMAIL REMOVED> > wrote:
> >> > Hi Jared,
> >> > The problem i see with use of alt="" in this context is that if there
> is
> >> a
> >> > caption for something then that something needs to be identified.
> >> > In time I hope the HTML5 figure/figcaption elementes will provide the
> >> > appropaitae semantics for this situation.
> >> > In HTML5 it is conforming for an image inside a figure with acaption
> not
> >> to
> >> > have an alt attribute, on the presumption that the image is adequately
> >> > dscribed by the caption. In this case I would expect user agents such
> as
> >> > screen readers to announce the presence of the image "graphic -
> >> > caption:....".
> >> >
> >> > Until such times I have suggested a pattern in examples in HTML5:
> >> > Techniques for providing useful text alternatives
> >> > http://dev.w3.org/html5/alt-techniques/#sec12
> >> > http://dev.w3.org/html5/alt-techniques/#m6
> >> >
> >> > would appreciate your feedback on these.
> >> >
> >> > regards
> >> > steve
> >> >
> >> > On 20 March 2012 14:27, Jared Smith < <EMAIL REMOVED> > wrote:
> >> >
> >> >> On Tue, Mar 20, 2012 at 7:10 AM, < <EMAIL REMOVED> >
> wrote:
> >> >>
> >> >> > 1. When there is a clear text image description, what should the
> >> >> > alt text on the image be?
> >> >>
> >> >> If the image description (i.e., caption) of the image conveys the
> >> >> content of the image, the image should probably have alt="". I like
> to
> >> >> teach that every image must have alternative text, but that
> >> >> alternative text does not necessarily have to be in the alt
> attribute.
> >> >> A caption is acceptable. Alt="" conveys that the image does not
> convey
> >> >> content or the content is conveyed in nearby content (e.g., the image
> >> >> caption).
> >> >>
> >> >> > 2. In contexts (such as social media) where he clear text image
> >> >> > description is welcome or permissible, should be used even if the
> >> >> > authoring tool allows alt (and possibly longerdesc)?
> >> >>
> >> >> I think this depends on the image and the image's context. In some
> >> >> cases having an image and a text description would be redundant for
> >> >> sighted users (imagine a photo of a cat with a caption of "cat"). In
> >> >> this case, the alt attribute would be better. The key is to
> accurately
> >> >> and succinctly convey the content while avoiding repetition or
> >> >> duplication of content.
> >> >>
> >> >> Jared Smith
> >> >> WebAIM.org
> >> >>