Re: How to check visualizations in iframes

...and there are many more. One of the most serious issues that test
software like WAVE, Axe etc cannot find, is of buttons and other
interactive components that won't work from the keyboard. Unfortunately
this is also one of the most prevalent accessibility defects. It usually
happens due to them being marked up in the HTML as <div> elements instead
of buttons. I reckon about 50% of all websites I audit have this issue, and
it can be a killer for those many people who cannot use a mouse because it
often bars them from important facilities like making a purchase.

Unfortunately that 70 - 75% of accessibility defects that the test tools
can't find includes some of the most serious issues like the above one -
ones that a consultant would mark as High or Critical priority in a WCAG
audit.

By the way, WAVE is quite open about this, as you would expect from WebAIM.
They have an entire Help page warning the user about their tool's
limitations and why you must include human testing as well to get the
proper picture. Unlike almost all other automated test tools that prefer to
keep quiet about it and not provide any warning whatsoever until after you
have actually used their tool, and often not even then!

Regards,
Guy Hickling