Simple accessibility heuristics for UX walkthroughs

Greg Gay at
Fri Sep 7 15:29:57 UTC 2007

Hi Colin
The only thing I might add is a check for text alternatives for graphic
content. Usually that means including Alt text with images, but also Alt
for image buttons, clientside Map areas, etc, and empty Alt for
meaningless or decorative images. Unfortunately it normally means
examining HTML, though in IE 6 if one holds a mouse pointer over an
image with Alt text, it will display.

Missing text alternatives for visual content is the #1 accessibility
barrier, and as such is listed in the guidelines as the first
requirement for compliance (WCAG 1.0 Guideline 1.1)


Colin Clark wrote:

>Hi everyone,
>I've drafted a page that outlines the simple heuristics I have been 
>using for the UX walkthroughs while evaluating accessibility:
>To be clear, this is intended as an easy process that anyone can pick up 
>relatively quickly, even without any expertise in accessibility. It 
>isn't intended as a substitute for testing with real assistive 
>technologies, evaluation tools, and an "under the covers" inspection of 
>the markup.
>On the other hand, they're easy, low cost, and don't require any 
>substantial technical or accessibility expertise. A perfect fit for 
>anyone doing a UX walkthrough of Moodle, uPortal, or Sakai.
>Thoughts? Suggestions?

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