Building Accessible Web Applications

By Zer0-Mistakes Team

A comprehensive guide to web accessibility best practices, WCAG compliance, and creating inclusive digital experiences.

Estimated reading time: 3 minutes

Building Accessible Web Applications

Web accessibility isn’t just a legal requirement—it’s about creating inclusive experiences for everyone. This guide covers essential accessibility practices for modern web development.

Why Accessibility Matters

Over 1 billion people worldwide have some form of disability. Making your website accessible:

  • Expands your audience: Reach more users
  • Improves SEO: Accessible sites rank better
  • Enhances usability: Benefits all users
  • Ensures compliance: Meet legal requirements

Core Principles (POUR)

1. Perceivable

Users must be able to perceive the information:

  • Provide text alternatives for images
  • Offer captions for videos
  • Ensure sufficient color contrast
  • Make content adaptable

2. Operable

Users must be able to operate the interface:

  • Keyboard accessible
  • No seizure-inducing content
  • Navigable structure
  • Enough time to complete tasks

3. Understandable

Content must be understandable:

  • Readable text
  • Predictable behavior
  • Input assistance
  • Error prevention

4. Robust

Content must work with various technologies:

  • Valid HTML
  • Name, role, value for components
  • Status messages announced

Quick Wins

  1. Use semantic HTML: <nav>, <main>, <article>
  2. Add alt text: Describe images meaningfully
  3. Check contrast: Use tools like WebAIM
  4. Test keyboard navigation: Tab through your site
  5. Add ARIA labels: Where semantic HTML isn’t enough

Start making the web more accessible today!