Web accessibility ensures that everyone, including people with disabilities, can use your website effectively. With increasing legal requirements and growing awareness, accessibility is a must-have, not a nice-to-have.
WCAG 2.2 Overview: The Web Content Accessibility Guidelines 2.2 introduced new success criteria focused on mobile accessibility, cognitive disabilities, and user authentication. Key additions include dragging movements alternatives, consistent help placement, and accessible authentication.
Semantic HTML First: The foundation of accessibility is semantic HTML. Use proper heading hierarchy, landmark elements (nav, main, aside, footer), and native interactive elements (button, input, select) before reaching for ARIA.
Keyboard Navigation: Every interactive element must be keyboard accessible. Implement visible focus indicators, logical tab order, and keyboard shortcuts for complex interactions. Test your site using only a keyboard.
Color and Contrast: Maintain minimum contrast ratios — 4.5:1 for normal text and 3:1 for large text. Don't rely on color alone to convey information. Use patterns, icons, or text labels as additional indicators.
Screen Reader Testing: Test with actual screen readers — VoiceOver on Mac, NVDA on Windows, and TalkBack on Android. Automated tools catch only 30-40% of accessibility issues.
Forms and Error Handling: Label all form inputs, provide clear error messages linked to the relevant fields, and offer suggestions for correction. Use aria-describedby for additional context.
Media Accessibility: Provide captions for videos, transcripts for audio content, and descriptive alt text for images. Use aria-live regions for dynamic content updates.
Automated Testing Integration: Integrate accessibility testing into your CI/CD pipeline using tools like axe-core, pa11y, or Lighthouse. Catch regressions before they reach production.
Common Mistakes to Avoid: Empty alt attributes on informative images, missing form labels, low contrast text, auto-playing media, and keyboard traps are the most common accessibility failures.
Accessibility is an ongoing practice, not a one-time audit. Build it into your design system, code reviews, and testing processes.
