More than meets the eye
4 tips for accessible animation
🐦 @ashkyd
fast GIFs can give me an epileptic fit
I love what you do, but
Texas grand jury charged a man with
aggravated assault
with a deadly weapon
after tweeting a flashing GIF designed to trigger epilepsy
Guideline 2.3
“ Do not design content in a way that
is known to cause seizures.”
2.3.1 - Three Flashes or
Below Threshold
G19: Ensuring that no component of the content flashes
more than three times in any 1-second period
G176: Keeping the flashing area small enough
G15: Using a tool to ensure that content does not violate the
general flash threshold or red flash threshold
SC 2.2 (paraphrased)
“ there is a mechanism for the user
to pause, stop, or hide it unless [it]
is part of an activity where it is
essential”
🗺
🚌
🤢
😕
Network information API
type
cellular, ethernet, wifi
effective type
slow 2g, 2g, 3g, 4g
4 tips for accessible animation
- Be aware of seizure triggers
- Let the user pause
- Consider the reduced motion preference
- Optimize for the network state
🐦 @ashkyd
🎉