Operations
WCAG
WCAG (Web Content Accessibility Guidelines) is the international standard for web accessibility. WCAG 2.1 AA is the typical compliance target — required by law in many jurisdictions (US ADA, EU Accessibility Act, UK Equality Act).
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Four principles (POUR): Perceivable, Operable, Understandable, Robust. Practical checks: 4.5:1 colour contrast, alt text on images, keyboard navigation works, focus indicators visible, language declared, form labels associated, error messages clear. WCAG 2.2 (2024) adds requirements around dragging gestures + focus appearance.