Website audit
ADA Website Compliance: A Practical WCAG Guide for 2026
August 24, 20268 min readBy Prospetra Team
ADA website compliance is about making sure people with disabilities can actually use your site — and for many businesses, it's a legal requirement too. But the rules around it are less exact than people expect: the ADA itself predates the web, so compliance is usually judged against the WCAG technical standards. Here's what it means, what the law actually requires, and the practical steps to make your site accessible.
What ADA website compliance actually means
The Americans with Disabilities Act (ADA) is a law from 1990 that prohibits discrimination based on disability. Because the law never mentions websites, courts and regulators interpret whether and how it applies to them — and in practice, they've increasingly treated the WCAG standards as the yardstick for 'accessible enough.' That's why discussions of ADA compliance almost always become a conversation about WCAG.
Two important clarifications: legal compliance depends on your jurisdiction, the context of your business, and professional legal review — this guide is educational, not legal advice. And 'complying' in the practical sense is best understood as meeting the WCAG success criteria that cover the vast majority of real accessibility barriers.
The most common ADA website claims
Most accessibility-related claims and complaints center on a small set of recurring issues — which is good news, because they're fixable.
- Missing alt text on images (screen reader users can't interpret them).
- Low color contrast (text hard to read for low-vision users).
- Forms without labels (assistive tech can't tell users what to enter).
- Keyboard navigation that's broken or impossible (mouse-only sites exclude keyboard users).
- Missing captions on video (deaf and hard-of-hearing users excluded).
- Links and buttons without clear names or roles.
How WCAG maps to accessibility
The WCAG 2.2 standard organizes requirements under four principles — perceivable, operable, understandable, and robust — with levels A, AA, and AAA. Meeting WCAG 2.2 AA is the level most legal and procurement requirements reference. Our full WCAG 2.2 AA checklist walks through every practical check; here's the short version of what matters most:
- Perceivable: alt text, captions, adequate contrast.
- Operable: full keyboard access, visible focus, no keyboard traps.
- Understandable: clear labels, predictable navigation, recoverable errors.
- Robust: valid markup, correct roles and states for assistive tech.
Practical steps to become more accessible
You don't have to boil the ocean. Start with the highest-impact, most common fixes, then build accessibility into how you ship.
- Run an automated scan to find the objective failures (contrast, alt text, labels).
- Fix the most common issues first: alt text, contrast, form labels, focus states.
- Do a manual keyboard walkthrough of your key flows — this catches what tools can't.
- Test with a screen reader on your most important pages.
- Add automated checks to your build so issues can't ship silently again.
- Keep a maintenance pass on your calendar — accessibility decays as code changes.
The overlay disclaimer
Be wary of 'accessibility overlays' — scripts that promise to make a site ADA-compliant with one line of code. They can't fix underlying markup problems, can interfere with assistive tech, and are widely criticized (and in some cases targeted by claims) because they don't address the real issues. Fixing the underlying code is the durable, honest approach.
Check your accessibility baseline
The fastest way to know where you stand is to run the automated half of an accessibility audit. A free scored audit reports your contrast, alt text, and label issues in about 30 seconds, so you can see the size of the job before you plan fixes. Then work through the detailed WCAG 2.2 AA checklist, and keep an eye on your website health score as you improve.
Frequently asked questions
Is ADA compliance required for websites?+
The ADA doesn't mention websites directly, but courts and regulators increasingly apply it to sites under Title III. In practice, compliance is judged against the WCAG standards. Whether it applies to your business depends on your jurisdiction and context — this guide is educational, not legal advice.
What does an ADA-compliant website look like?+
In practical terms, one that meets the WCAG success criteria: alt text, adequate color contrast, labeled forms, full keyboard access, visible focus, and captions are the most common requirements. Meeting WCAG 2.2 AA is the level most referenced.
Can an accessibility overlay make my site ADA compliant?+
Generally no. Overlays can't fix underlying markup problems, can interfere with assistive tech, and are widely criticized. Fixing the underlying code — alt text, contrast, labels, keyboard access — is the durable approach.
What is the difference between ADA and WCAG?+
ADA is the US law (1990) that prohibits disability discrimination; WCAG is the technical standard (developed by the W3C) that defines what 'accessible' means in practice. ADA claims are usually evaluated against WCAG criteria.