Accessibility isn't just a compliance checkbox — it's a chunk of customers who can't complete checkout if you get it wrong. And increasingly, it's also a legal risk.

Here's a practical rundown of what WCAG compliance actually means for an e-commerce site, and how to test for it.

What WCAG Actually Requires (In Plain Terms)

WCAG (Web Content Accessibility Guidelines) is built around four principles: content should be Perceivable, Operable, Understandable, and Robust.

  • Perceivable: images have alt text, videos have captions, color isn't the only way information is conveyed.
  • Operable: every action works with a keyboard alone, not just a mouse.
  • Understandable: form errors are clearly labeled, not just a red border.
  • Robust: the site works correctly with screen readers like VoiceOver or NVDA.

The Most Common E-commerce Failures

  • Low-contrast "sale" badges that fail contrast ratio requirements.
  • Icon-only buttons (like a cart icon) with no accessible label for screen readers.
  • Checkout forms that don't announce errors to screen reader users.
  • Image carousels with no keyboard navigation support.

How to Actually Test for It

  1. Run an automated scan first with a tool like axe DevTools or WAVE — it catches the obvious issues fast.
  2. Manually tab through your entire checkout flow using only a keyboard — no mouse.
  3. Test your top product page with a screen reader turned on, start to finish.
  4. Check color contrast on every badge, button, and price element using a contrast checker.

Building It Into Your Process

  • Add an accessibility check to your QA checklist for every new theme release.
  • Fix new accessibility issues before they ship, not in a future "cleanup sprint" that never happens.
  • Treat accessibility bugs with the same priority as checkout bugs — for some customers, they are checkout bugs.

Conclusion

Accessibility testing isn't a one-time audit — it's an ongoing part of QA. Automate what you can, manually test keyboard and screen reader flows, and treat accessibility issues with the same urgency as any other checkout-blocking bug.