Web Accessibility: Why, How and What?
summary
WHO estimates 1.3 billion people have disabilities and WCAG 2.1 organizes 13 success criteria under four principles — perceivable, operable, understandable, robust — with levels A, AA, AAA; recommended target is Lighthouse 90+ for accessibility. Demo uses Chrome Lighthouse, Mac VoiceOver, grayscale and keyboard navigation checks, shows Red Hat customer portal scoring 94 and PatternFly components with ARIA roles, states and properties (ARIA roles, states, properties).
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chapters (15)
- 0:00Web accessibility intro
- 1:04Why accessibility matters
- 2:06User categories
- 3:09Business impact
- 4:35WCAG guidelines
- 5:59Perceivable principle
- 8:03Operable principle
- 9:06Understandable principle
- 10:11Robust principle
- 10:53WCAG conformance levels
- 12:16Assistive technologies
- 13:01ARIA roles and properties
- 15:25Accessible design systems
- 18:46Accessible app features
- 23:17Q&A
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