Skip to content
wcagc
Create account
←Back to blog
compliance softwarebuying guideWCAGEAAADA

What is accessibility compliance software?

What accessibility compliance software does: finds detectable WCAG issues, tracks fixes, keeps evidence. Who needs it, and what it can't decide.

P

Pavel Charkasau

Accessibility compliance software is a tool that tests your website or app against an accessibility standard (usually WCAG 2.1 or 2.2 Level AA), reports the barriers it can detect, and helps you track the fixes and keep a record of the work. Most products in the category combine four jobs: automated scanning across many pages, a workflow to assign and re-check issues, monitoring over time, and documentation such as reports or an accessibility statement draft. What the name suggests and what the software does are not the same thing, though. No tool decides whether you comply with a law. The W3C says it directly: evaluation tools "can not determine accessibility, they can only assist in doing so" (W3C WAI). Automated checks cover roughly 30 to 57% of issues depending on how you count, and the rest needs a person with a keyboard and a screen reader. So the useful way to think about accessibility compliance software is as the system that finds the machine-detectable part, organises the remediation, and keeps the evidence that a human review then builds on.

What does accessibility compliance software actually do?

Strip the marketing off and you'll find a handful of functions. Different vendors weight them differently, which is why two products in the same category can feel unrelated.

  • Automated testing: a rule engine loads each page in a browser and checks the rendered DOM: images without a text alternative, form fields without a label, text that fails the contrast ratio in WCAG 1.4.3, buttons with no accessible name. Many commercial products, ours included, run on Deque's open-source axe-core engine.
  • Crawling, which decides how far the tool gets. The W3C's selection guide notes that "some tools check a single page, while others check entire groups of related pages," and that "some can also access password-restricted content" (W3C WAI).
  • A remediation workflow. Each finding carries the failing element and its selector, gets assigned to someone, lands in GitHub or Jira, and is re-checked after the fix ships.
  • Monitoring: scheduled re-scans and a diff against the last comparable run, so a regression shows up the week it's introduced.
  • Documentation, meaning exportable reports, a dated scan history, and in some tools a draft accessibility statement built from the results.

The W3C's own list of evaluation tools shows how broad the category is. It filters by type (browser plugin, bookmarklet, desktop app, online tool, command-line/CI, CMS plugin and more) and says plainly that "W3C does not endorse specific products" (W3C WAI tools list). A free browser extension and a monitored, authenticated, full-site platform both show up there. They solve different problems.

How is it different from an accessibility scanner?

A scanner is one component; compliance software is the scanner plus everything that happens after a finding appears. If all you need is to check a page you're building, a scanner (or a browser extension) is the right tool. Compliance software earns its keep when there are many pages, several people fixing things, and someone who will later ask what you did and when.

Scanner or extensionAccessibility compliance software
ScopeThe page in front of youMany pages, often behind a login
OutputA list of violationsTracked issues, history, re-checks
Over timeRun it again by handScheduled scans and regression diffs
EvidenceScreenshot or exportDated history, reports, statement draft
Human reviewNot coveredSome tools let you record it; none replace it

If you're comparing products at the scanner level, our accessibility scanner buyer's guide goes through the evaluation questions in detail.

Is an accessibility overlay compliance software?

No, though overlays are often sold under that label. An overlay is a script that loads on top of your site and tries to patch problems in the visitor's browser at runtime, usually with a toolbar for font size and contrast. It doesn't find issues for your developers or change your source code.

That difference has had legal consequences. In April 2025 the US Federal Trade Commission approved a final order requiring accessiBe to pay $1 million and barring it from representing that its automated products "can make any website WCAG-compliant or can ensure continued compliance with WCAG over time" without evidence to support the claim (FTC). Software that reports issues so you can fix them in code is a different kind of product. We built wcagc that way on purpose, and the reasoning is in overlay vs code-first accessibility.

Who needs accessibility compliance software?

Any organisation that has a legal or contractual accessibility target and more pages than one person can check by hand. In practice that's three groups.

First, businesses selling into the EU. The European Accessibility Act applies to covered products and services placed on the market from 28 June 2025, including e-commerce and banking services. Service providers also have to make information about how their service meets the accessibility requirements available to the public (Article 13(2) and Annex V of Directive (EU) 2019/882). In practice the technical yardstick is EN 301 549, whose web chapter maps to WCAG. A tool that keeps a dated record of what you tested and fixed makes that public information easier to write honestly.

Second, US state and local governments. The Department of Justice's Title II rule requires their web content and mobile apps to meet WCAG 2.1 Level AA. After an interim final rule in April 2026, the compliance dates are 26 April 2027 for governments serving 50,000 people or more, and 26 April 2028 for smaller ones and special districts (ADA.gov). Private businesses fall under Title III of the ADA, which has no web-specific regulation, but WCAG is the benchmark most organisations work to.

Third, teams that ship often. A site that changes every week can regress every week. Here the value is less about any one law and more about catching the unlabeled button in the pull request instead of in a complaint. Our post on accessibility testing in CI shows what that looks like.

If you have a ten-page brochure site that changes twice a year, you may not need a platform at all. A careful manual review against the WCAG checklist and a free scan will get you most of the way.

What can't accessibility compliance software do?

It can't tell you that you comply. I'd put that on the front of every product page in the category if I could, ours included.

The numbers are public. Deque's analysis of more than 2,000 audits, covering over 13,000 pages and nearly 300,000 issues, found that automated testing fully covered 57% of issues on average, counted by volume (Deque). Counted by the share of WCAG success criteria a tool can decide, the figure is closer to 30%. Both are honest; they measure different things.

What sits in the remaining part is the work that needs judgement:

  • whether alt text describes the image or just says "image123",
  • whether focus moves somewhere sensible when a modal opens,
  • whether a screen reader announces a checkout error at the moment it happens,
  • whether a multi-step flow can be completed at all with the keyboard.

The W3C's evaluation methodology, WCAG-EM (updated as a Group Note in July 2026), treats tools as an aid to that review: "evaluation tools can significantly assist evaluators," but "most accessibility checks are not fully automatable." It also requires a sample to "include all pages or views that belong to a series presenting a complete process" (W3C WCAG-EM). A tool that can't sign in and walk your checkout can't meet that on its own.

So treat a clean automated report as "nothing machine-detectable found on the pages reached," and nothing more.

How do you choose accessibility compliance software?

Start from the work you need done, not from the feature grid. Five questions narrow the field quickly:

  1. Which standard are you held to? WCAG 2.1 AA, 2.2 AA, EN 301 549, Section 508. Findings should map to that standard by success criterion or clause.
  2. Where do your users actually struggle? If the important flows are behind a login (account pages, checkout, a SaaS dashboard), the tool has to authenticate and follow them.
  3. Who fixes the issues? If it's developers, look for the selector, the failing HTML and a ticket in the tracker they already use.
  4. What does it say it can't check? axe-core has an incomplete result type, documented as "needs review" (axe-core API). Ask whether the product shows those items or hides them to make the report look tidier.
  5. What evidence will you need later? A dated history, re-scan diffs, exports a reviewer will accept, and somewhere to record the manual checks.

Then test it on your own site, on the flows that matter, before you sign anything. A trial on the vendor's demo page tells you very little. The proof-of-concept guide covers how to run that in a week.

Frequently asked questions

What is accessibility compliance software?

It is software that tests websites or apps against an accessibility standard such as WCAG, reports the issues it can detect automatically, and helps teams track fixes, monitor regressions and keep evidence of the work. It assists a human review; it doesn't replace one.

Can accessibility compliance software make my website compliant?

No. Software finds machine-detectable issues, which is roughly 30 to 57% of the total depending on how you count (Deque). Conformance also depends on manual testing with a keyboard and assistive technology, and on fixing the code.

Is an accessibility overlay the same as compliance software?

No. An overlay patches pages in the visitor's browser and doesn't change your code. The FTC barred accessiBe from claiming its automated products make websites WCAG-compliant without evidence (FTC).

Do small businesses need accessibility compliance software?

Not always. A small, rarely changed site can often be covered by a free scan and a manual review against a WCAG checklist. Software becomes worth it when there are many pages, frequent releases, or flows behind a login.

Which standard should the software test against?

The one you are held to, usually WCAG 2.1 or 2.2 Level AA. For the EAA that means EN 301 549, and for US state and local governments the DOJ's Title II rule names WCAG 2.1 Level AA (ADA.gov).

See what the software finds on your site

The quickest way to understand the category is to look at real output. Run a free scan on one of your public pages and you'll get the automated WCAG issues with the element and selector for each, plus a clear note on what still needs a manual check. If you need a public statement afterwards, the accessibility statement generator drafts one for you to review.

Written by Pavel Charkasau, founder of wcagc.com. Last updated 25 October 2026.

Sources