What is Web Accessibility?
Web accessibility ensures that websites can be used by everyone, including people with disabilities and the elderly.
Why It Matters
Legal Requirements
United States
European Union
Asia Pacific
WCAG 4 Core Principles
1. Perceivable
Checklist:
Code Example:
<!-- Good -->
<img src="product.jpg" alt="Red running shoes, side view">
<!-- Bad -->
<img src="product.jpg" alt="image">2. Operable
Checklist:
Code Example:
/* Focus Style */
:focus {
outline: 2px solid #005fcc;
outline-offset: 2px;
}3. Understandable
Checklist:
4. Robust
Checklist:
Practical Implementation Guide
Semantic HTML
<!-- Good -->
<nav aria-label="Main menu">
<ul>
<li><a href="/">Home</a></li>
<li><a href="/about">About</a></li>
</ul>
</nav>
<main>
<article>
<h1>Title</h1>
<p>Content</p>
</article>
</main>
<!-- Bad -->
<div class="nav">
<div class="item">Home</div>
</div>ARIA Usage
<!-- Modal Dialog -->
<div role="dialog" aria-modal="true" aria-labelledby="modal-title">
<h2 id="modal-title">Confirm</h2>
<p>Are you sure you want to delete?</p>
<button>Confirm</button>
<button>Cancel</button>
</div>Testing Tools
Conclusion
Web accessibility isn't special. It's good design and good code for everyone. Considering accessibility from the start is far more efficient than fixing it later.