Why Accessibility Matters

  • Improves usability for everyone.
  • Required by WCAG standards.
  • Benefits SEO (Google favors accessible sites).

Common Issues

  1. Missing alt text for images.
  2. Poor color contrast.
  3. Keyboard navigation not supported.
  4. Improper heading structure (h1 → h6).

Accessibility Audit Tools

  • Lighthouse (Accessibility tab).
  • axe DevTools (browser extension).
  • Screen readers: NVDA, VoiceOver.

Fixes

  1. Alt text for images:
<img src="chart.png" alt="Sales growth chart 2025">
  1. Color contrast:
  2. Use tools like contrast-ratio.com. Minimum 4.5:1.
  3. Keyboard focus:
button:focus {
  outline: 2px solid blue;
}
  1. ARIA roles:
<nav aria-label="Main navigation">
  <ul>
    <li><a href="/home">Home</a></li>
  </ul>
</nav>

Best Practices

  • Use semantic HTML (header, nav, main, footer).
  • Ensure all interactive elements are reachable via Tab key.
  • Provide skip links for screen readers.
<a href="#main" class="skip-link">Skip to content</a>