Roughly one in six people worldwide lives with a significant disability — visual, auditory, motor or cognitive. An inaccessible website turns those visitors away at the door. Beyond the ethics, accessibility has become a legal expectation in the EU, US and a growing list of markets, and its techniques overlap heavily with good SEO.

What WCAG Is

The Web Content Accessibility Guidelines (WCAG) are the global standard, organized around four principles — content must be Perceivable, Operable, Understandable and Robust. Conformance comes in levels; Level AA is the target referenced by most laws and procurement requirements, including the European Accessibility Act now in force.

The Most Common Failures

  • Images without alt text — invisible to screen readers and search engines alike
  • Text with insufficient color contrast against its background
  • Forms whose fields have no programmatic labels
  • Interfaces unusable by keyboard alone (menus, modals, carousels)
  • Links reading "click here" with no context
  • Videos without captions
  • Focus states removed for aesthetics, stranding keyboard users

The Business Case

  1. Legal exposure: accessibility lawsuits and complaints keep rising; public-sector and enterprise contracts increasingly require AA conformance.
  2. SEO overlap: alt text, heading structure, link clarity and semantic HTML serve crawlers and assistive tech identically.
  3. Wider market: accessible sites also serve aging users, slow connections and bright-sunlight phone screens.
  4. Better UX for everyone: captions, contrast and keyboard support are quality features, not accommodations.

A Practical Path to Compliance

  1. Run automated scans (Lighthouse, axe, WAVE) — they catch roughly a third of issues.
  2. Do a manual keyboard-only walkthrough of key journeys.
  3. Test with a screen reader (NVDA is free) on your top pages and forms.
  4. Fix in impact order: forms and checkout first, then navigation, then content.
  5. Add accessibility checks to your content workflow so new pages stay compliant.

Why Automated Scans Alone Give a False Sense of Security

The "roughly a third of issues" figure for automated scanning tools deserves emphasis, because a common and costly mistake is running Lighthouse or axe, seeing a clean report, and assuming the site is genuinely accessible. Automated tools excel at detecting mechanically verifiable issues (missing alt attributes, insufficient color contrast ratios) but cannot judge whether an alt text description is actually meaningful, whether a keyboard tab order makes logical sense, or whether a screen reader user can actually complete a checkout flow without confusion. The manual keyboard walkthrough and screen reader testing steps in the path above are not optional extras layered onto automated scanning — they are where the majority of real-world accessibility failures that automated tools cannot see actually get caught.

Frequently Asked Questions

Do accessibility overlay widgets make a site compliant?

No — overlays mask a fraction of issues and have themselves been the subject of complaints. Fix the underlying HTML.

What does remediation cost?

Building accessible from the start adds little. Retrofitting a finished site typically runs 5–15% of its original build cost depending on severity.

Should accessibility testing be repeated after every content update?

For pages built with accessible components and templates from the start, ongoing risk is low; new page types, forms or interactive features should each get a fresh accessibility check before launch rather than assuming the original audit still fully applies.

Need an accessible build or an audit? Our design team builds to WCAG AA — ask for an accessibility review.