accessible ui animation
TRANSCRIPT
WebAnimationWeekly.com
slack.AnimationAtWork.com
A lot of au)s)c children are riveted by the mo)on of (fan) blades… Dyslexics who can see the blade flicker say it's horribly fa)guing and distrac)ng.
The mo)on is part of the aCrac)on, too. …I do get stuck on those geometric screen savers a lot of computers have.
Temple Grandin Animals in Translation
“
Guidelines for Avoiding Seizures
• No more than 3 flashes per second.
• The combined area of flashes occurring concurrently occupies no more than a total of one quarter of any 341 x 256 pixel rectangle anywhere on the displayed screen area when the content is viewed at 1024 by 768 pixels.
—The Trace Research & Development Center, a part of the College of Informa)on Studies at the University of Maryland trace.umd.edu/peat
Vestibular System
The sensory system that gives us our sense of balance and spa8al orienta8on via ears, eyes, and other inputs.
More about reduced mo)on media queries and how to use them… goo.gl/SdC4LJ
Val Head
Op4on 1: Change Se:ngs
Accessibility Settings
Anima&on preferences:Full anima&on Reduce anima&on Disable anima&on
Op4on 2: Ask First
This site uses anima&on. How would you like to experience it?
Full anima&on Reduce anima&on Disable anima&on
WCAG
The W3C’s Web Content Accessibility Guidelines (WCAG) are the accessibility gold standard for the Web.
1999’s stringent standards re: anima4on
• Provide alt text for animated GIFs.
• Synchronize your cap)ons/audio descrip)ons.
• “Ensure that moving, blinking, scrolling, or auto-upda)ng objects or pages may be paused or stopped.”
• A note about flashes and epilepsy (plz keep flashes below 20 per second, thanks).
Broad generaliza4ons/good guesses
• Anima)on should serve a purpose.
• Be consistent
• Downgrade to fades
• Use mo)on blur on fast, large moving elements
• An)cipate and signal oncoming anima)ons
• Reduce autoplay
• No one likes parallax anymore
Issues facing standardizing accessibility
• Extrapola)ng from unrelated research.
• Research from homogenous sources.
• Humans are inherently different.
It appears every user with Ves)bular disabili)es is unique and its hard to nail down a group of provoca)ve ac)ons that would significantly address a lot of the issues without significant impact on design.
“
David MacDonald Invited Expert at
the WCAG
Animation belongs to all of us now.
Let us set the web in motion together.
WebAnimationWeekly.com
slack.AnimationAtWork.com
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