Understanding WCAG 2.0  Skip to Content (Press Enter)   Three
Flashes: Understanding SC 2.3.2  2.3.2 Three Flashes: Web pages
do not contain anything that flashes more than three times in
any one second period. (Level AAA)  Intent of this Success
Criterion  The purpose of this Success Criterion is to further
reduce the chance of seizures. Seizures cannot be completely
eliminated since some people are so sensitive. However, by
eliminating all 3-per-second flashing over any area of the
screen, the chances of a person having a seizure are further
reduced than when just meeting the measures ordinarily used
today in standards internationally, as we do at Level A.
Whereas Success Criterion 2.3.1 allows flashing if it is dim
enough or has a small enough area, Success Criterion 2.3.2 does
not allow flashing greater than 3 per second, regardless of
brightness or size. As a result, even a single flashing pixel
would violate this criterion. The intent is to guard against
flashing larger than a single pixel, but since a