Web accessibility ensures that people with disabilities can perceive, understand, navigate, and interact with your WordPress site. It’s not just a legal requirement in many jurisdictions — it’s a fundamental aspect of good web development that improves the experience for all users.
This guide covers how to make your WordPress site accessible according to WCAG 2.1 guidelines, from choosing an accessible theme to auditing your content.
Understanding WCAG
The Web Content Accessibility Guidelines (WCAG) are the international standard for web accessibility. They’re organized around four principles: Perceivable, Operable, Understandable, and Robust. Each principle has specific success criteria at three levels: A (minimum), AA (recommended), and AAA (advanced).
For most WordPress sites, WCAG 2.1 Level AA compliance is the target. This covers providing text alternatives for non-text content, ensuring keyboard navigation works, maintaining sufficient color contrast, providing captions for multimedia, and ensuring content is readable and predictable.
Choosing an Accessible Theme
Your theme is the foundation of your site’s accessibility. Start with a theme that’s designed for accessibility from the ground up. WordPress’s default themes — Twenty Twenty-Four and later versions — are built with accessibility in mind. The WordPress.org theme directory includes an accessibility-ready tag for themes that meet specific accessibility requirements.
When evaluating a theme, check that it uses semantic HTML (proper heading hierarchy, landmark elements), supports keyboard navigation, has sufficient color contrast, and includes skip-to-content links. Test the theme with a screen reader to verify that dynamic content is announced correctly.
Accessible Content Creation
Content creators play a crucial role in accessibility. Use proper heading hierarchy — H1 for the page title, H2 for main sections, H3 for subsections. Screen reader users rely on headings to navigate content, so skipping from H2 to H4 without an H3 is confusing.
Add descriptive alt text to all images. Alt text should describe the content and function of the image, not just its appearance. For decorative images that don’t convey information, use empty alt text (alt=””) so screen readers ignore them.
Building Accessible Blocks and Plugins
If you build custom Gutenberg blocks or plugins, accessibility must be part of your development process. Use semantic HTML in your block templates. Ensure all interactive elements are keyboard accessible. Add ARIA labels where native HTML semantics are insufficient.
Test your blocks with keyboard-only navigation. If a user can’t Tab through all interactive elements, activate controls with Enter or Space, and see focus indicators at every step, your block isn’t accessible. Use tools like the axe DevTools browser extension to identify accessibility issues during development.
Testing and Auditing
Accessibility testing should be part of your regular maintenance. Use automated tools like WAVE, axe DevTools, and Lighthouse for initial audits. Automated tools catch about 30% of accessibility issues — the remaining 70% require manual testing.
Manual testing includes navigating your site with a keyboard, testing with a screen reader (NVDA on Windows, VoiceOver on Mac), checking color contrast with a contrast checker, and ensuring all forms have proper labels and error messages.
The Bottom Line
Accessibility is not an optional feature of your WordPress site. It’s a fundamental requirement that improves the experience for all users, expands your audience, and protects you from legal liability. Start with an accessible theme, train your content creators, test your custom blocks and plugins, and audit your site regularly. Accessibility is an ongoing commitment, not a one-time project.