Free Tool

Accessibility Health Checker

Instantly scan your website for critical WCAG 2.1 Level AA violations. Ensure your site is accessible to all users and compliant with accessibility standards.

Scan Your Website

Enter your website URL to check for the most common accessibility issues

Why Website Accessibility Matters

1 in 4

Adults in the US have a disability

$490B

In disposable income held by US adults with disabilities

Sources: CDC; American Institutes for Research (2018).

An accessible site is only half the job

Once people can use your site, the next question is what happens when they reach out: at 9pm, on a weekend, or in Spanish. LUNA is a bilingual AI employee that answers WhatsApp and web chat, books appointments, and captures every lead.

What this checker looks for

We scan your page's HTML and its stylesheets against common WCAG 2.1 Level A and AA criteria. Here's what that covers.

Color contrast

We calculate the real contrast ratio between your text and background colors and flag anything under 4.5:1.

Heading structure

Screen reader users navigate by headings. We check that you have an H1 and that levels don't skip.

Image alt text

Every meaningful image needs a text alternative, or it simply doesn't exist for a blind visitor.

Form labels

Unlabeled inputs make forms impossible to complete without sight.

Focus indicators

If you removed the focus outline in CSS, keyboard users can't tell where they are on the page.

Language declaration

A missing lang attribute makes screen readers pronounce your page in the wrong language.

Reduced motion

Animation without a prefers-reduced-motion fallback can trigger nausea and migraines.

Legible text size

Text under 12px is unreadable for a large share of visitors over 40.

What an automated scan can and can't tell you

What we catch

Measurable code and style problems
Missing structural elements like headings and labels
Color contrast failures, calculated precisely
Issues that affect every visitor on every page

What still needs a human

Whether your alt text is actually descriptive
Whether your site makes sense navigated by keyboard alone
Whether a screen reader user can complete a booking
Whether your error messages are understandable

Automated tools catch roughly a third of real accessibility barriers. Any tool promising full compliance from a single scan or a single line of JavaScript is overselling, and courts have said as much.

Frequently asked questions

Yes. Scan any public URL, as many times as you need, with no account and no credit card. If you want the full report emailed to you, we ask for an email address.

Usually a few seconds. We fetch your page and its stylesheets, run the checks, and show your score immediately.

Sites that render their content with JavaScript serve an almost empty HTML shell to crawlers. We detect this and tell you honestly rather than reporting false problems. We still analyze your stylesheets, which are real files either way, so contrast, focus, and motion checks remain valid.

Often, yes. Heading structure, alt text, and language declarations are things both screen readers and search engines rely on. Accessibility work and SEO work overlap more than most people expect.

The scan itself is free and always will be. If you want hands-on help remediating your site, get in touch and we'll talk about what you need.