Re: Failure of Success Criterion Question for F30 and F38

>> Are other methods to (such as aria-hidden="true") valid
>
> Techniques are not exhaustive. Failure techniques should fail always
> (i.e. if you do this, it's a fail), while positive techniques are only
> ever to be considered one of a series of possible approaches that
> satisfy the underlying criterion. So short answer, yes.

I agree, other methods are valid. Yet failure F38
<https://www.w3.org/WAI/WCAG21/Techniques/failures/F38> as currently
written disallows modern techniques such as responsible use of
aria-hidden=true. So I've filed a bug: "F38 disallows techniques that
actually satisfy 1.1.1". https://github.com/w3c/wcag/issues/828

Mitchell Evan
mtchllvn@gmail.com
+1 (510) 375-6104 mobile

On Mon, Jul 22, 2019 at 11:56 AM Patrick H. Lauke <redux@splintered.co.uk>
wrote:

> On 22/07/2019 15:58, Andrew Ly wrote:
> > Hi,
> >
> > I'm reaching out since my organization has been working on updating our
> > policies to be fully AODA compliant and accessible for all audiences.
> >
> > The success criterion around images has been rather specific and on our
> > end and we wanted to get some clarification.
> >
> > F30:
> > https://www.w3.org/WAI/WCAG21/Techniques/failures/F30
> > Would it be considered a failure for this success criteria if alt text
> > was present (describing the image to help search crawlers better
> > understand the image), but the image is considered decorative and hidden
> > (role="presentation", or aria-hidden="true" for screen readers)?
> >
> > Alt text is typically used to help us better optimize our pages and
> > content for search engines and by stripping it out completely across the
> > majority of images being decorative could have a significant impact on
> > our visibility overall.
>
> As Alan already said, this sounds more like an attempt at
> keyword-stuffing, or could be perceived that way by search engines
> anyway and penalised. Optimise your content for human audiences first
> and foremost, and search engines (that try to actually perceive the page
> as a human audience would) will appropriately rank/categorise it. If
> you're having issues with pages appearing for certain phrases, then
> perhaps optimise your actual visible text.
>
> > F38:
> > https://www.w3.org/WAI/WCAG21/Techniques/failures/F38
> > In this criteria, only role="presentation" is identified as being the
> > success criteria to mark up decorative images with to hide it from
> > assistive technology.
> >
> > Are other methods to (such as aria-hidden="true") valid
>
> Techniques are not exhaustive. Failure techniques should fail always
> (i.e. if you do this, it's a fail), while positive techniques are only
> ever to be considered one of a series of possible approaches that
> satisfy the underlying criterion. So short answer, yes.
>
> P
> --
> Patrick H. Lauke
>
> www.splintered.co.uk | https://github.com/patrickhlauke
> http://flickr.com/photos/redux/ | http://redux.deviantart.com
> twitter: @patrick_h_lauke | skype: patrick_h_lauke
>
>