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Web Accessibility (A11y)

Learn how to make websites accessible to all users. Master semantic HTML, ARIA attributes, keyboard navigation, color contrast, and accessibility testing.

Prerequisites:📦Tag Builder

What is Web Accessibility?

Understand why accessibility matters, who benefits, and the standards that guide inclusive web design.

The Role of Semantic HTML

Learn why semantic elements like <nav>, <main>, and <header> are essential for screen readers and accessible navigation.

Introduction to ARIA Attributes

Learn when and how to use ARIA roles, labels, and live regions to enhance accessibility beyond native HTML.

Keyboard Navigation & Focus

Learn how keyboard users navigate the web, how tab order works, and how to build skip links and visible focus indicators.

Color Contrast & Visual Accessibility

Understand WCAG contrast ratios, why color alone is not enough, and tools to verify your designs are readable by everyone.

Accessibility Testing Tools & Techniques

Learn how to audit your site with Lighthouse, axe DevTools, screen readers, and manual keyboard testing.

Build an Accessible Contact Form

Combine labels, ARIA attributes, keyboard navigation, and color contrast to build a fully accessible contact form.

Codelab: Converting to Semantic HTML

Replace generic divs with semantic landmarks and headings to create an accessible page structure in a real code editor.

Codelab: Adding ARIA to a Form

Build a real registration form with aria-label, aria-describedby, aria-live error messages, and accessible validation.