Web Accessibility The inclusive practice of ensuring there are no barriers that prevent interaction with, or access to, websites When sites are correctly designed, developed and edited, generally all users have equal access to information and functionality
Web Accessibility The inclusive practice of ensuring there are no barriers that prevent interaction with, or access to, websites When sites are correctly designed, developed and edited, generally all users have equal access to information and functionality Access to information and communications technologies is defined as a basic human right in the United Nations Convention on the Rights of Persons with Disabilities (UN CRPD)
• Contrast ≥ 4.5:1 • Safe fonts • Do not user color to convey meaning • Descriptive links • Graphics • No embedded text • Use alt text Visual Recommendations
• Contrast ≥ 4.5:1 • Safe fonts • Do not user color to convey meaning • Descriptive links • Graphics • Use alt text • No embedded text • Configurable text & layouts • Color, size • Percentages vs. absolute units (pixels) Visual Recommendations
• Don’t require the mouse or use onmouseover events • Let users skip over long content/menus • Don’t use for core content • Make tables friendly • Data tables • Layout tables Row by row Left to right Use headers Provide summaries Visual Recommendations
• Don’t require the mouse or use onmouseover events • Let users skip over long content/menus • Don’t use for core content • Make tables friendly • Data tables • Layout tables • Audio described videos Visual Recommendations
Auditory Accessibility Audience • YouTube • Auto-generated • Rewards! • Subtitles = Increase in watch time of 40% • Facebook • 85% of videos watched on mute >5% of people (446M) are hearing disabled By 2020: over 900M or 1 in 10
Speech Accessibility Audience • >1% of the total population stutter or stammer • Men are 4x’s likely • 10% of the population has a lisp • 18M US adults have a hard time using their voices in the last 12 months
Motor Recommendations • Don’t require a mouse • Use large link targets • Use a focus state for links • ‘Skip to Content’ a.hide { position: absolute; left: -9000px; top: 0; } a.hide:focus, a.hide:active { left: 0; }
Motor Recommendations • Don’t require a mouse • Use large link targets • Use a focus state for links • ‘Skip to Content’ • No auto-play audio/video • Use default tabbing order
Motor Recommendations • Don’t require a mouse • Use large link targets • Use a focus state for links • ‘Skip to Content’ • No auto-play audio/video • Use default tabbing order • Don’t use shortcut keys
Motor Recommendations • Don’t require a mouse • Use large link targets • Use a focus state for links • ‘Skip to Content’ • No auto-play audio/video • Use default tabbing order • Don’t use shortcut keys • Extend session timeouts
Motor Accessibility Audience • ~15% of adults have physical functioning difficulties • 10M adults with Parkinson’s • 350M people with arthritis • Stroke is the leading cause of long-term serious disability in the US
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