Free website accessibility checker

Scan any page for the WCAG failures that dominate real-world audits and ADA demand letters — missing alt text, unlabeled form fields, empty links and buttons, missing page language, blocked zoom. Free, no signup, and honest about what automation can and can't prove.

Why this matters right now

• ADA lawsuits are routine. Thousands of website-accessibility suits are filed in the US every year, overwhelmingly against ordinary small-business sites — and the settlement demand almost always costs more than fixing the site would have.
• The European Accessibility Act is enforceable. Since June 2025, businesses selling into the EU are expected to meet accessibility requirements — this stopped being optional for a very large slice of the web.
• It regresses silently. A redesign ships images without alt text; a new signup form goes out unlabeled. Like an expiring certificate, nobody notices until someone — a user, or a lawyer — does.

What the scan checks

Check	WCAG	Why it's the one that bites
Images without alt text	1.1.1	The single most common failure on the web — screen readers get a filename or silence.
Form fields without labels	3.3.2	A placeholder isn't a label; it vanishes the moment you type.
Empty links & buttons	2.4.4 / 4.1.2	Icon-only controls with no accessible name announce as just “link” or “button.”
Missing page language	3.1.1	Screen readers guess the language — and mispronounce everything when they guess wrong.
Pinch-zoom disabled	1.4.4	user-scalable=no locks out low-vision users on mobile.
Missing title, heading structure, untitled iframes	2.4.2 / 1.3.1	The document outline assistive tech navigates by.

The honest part

Automated tools catch roughly a third of WCAG issues — the most common third. No scan, and no overlay widget, makes a site “fully compliant.” Anyone telling you otherwise is selling you risk.

That's the position this tool is built on. Perimeter finds the automatable failures in your real HTML so you can fix them at the source, then re-checks every day and keeps a dated record of your posture — the ongoing-diligence evidence that matters if a demand letter or an EAA question ever arrives. Full conformance also needs manual testing (keyboard-only use, screen-reader flow); we say so rather than pretend.

We will never sell you an overlay widget. Sites using overlays continue to be sued, and the accessibility community has documented why for years. Fix the source; monitor that it stays fixed.

One scan, your whole compliance surface

Accessibility is one of four things Perimeter watches on every domain, every day: TLS certificate (expiry, chain, protocol), security headers (HSTS, CSP…), DNS & email authentication (SPF/DMARC — now enforced with hard bounces), and WCAG accessibility. One grade, one alert the moment something regresses, and on the Compliance plan a dated monthly report you can hand to an auditor — the same evidence approach as for SOC 2 and ISO 27001.