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A web accessibility checker is an automated tool that scans a website for WCAG compliance issues — such as missing alt text, insufficient color contrast, keyboard traps, and invalid ARIA attributes. Accessibility Checker runs 21 WCAG 2.1 / 2.2 checks per scan and returns a detailed report in under 30 seconds, with no signup required for the free scan.

Yes. The one-shot accessibility scan is free and requires no signup — results in about 30 seconds. Paid plans starting at €29 per month add continuous monitoring, team dashboards, downloadable compliance certificates, and REST API access.

Accessibility Checker tests against WCAG 2.1 and WCAG 2.2 at Level A, AA, and AAA. The same checks cover ADA Title III (United States), Section 508 (US federal agencies), and the European Accessibility Act (EAA) — the three regulations that reference WCAG as their technical baseline.

Yes. The EAA has been mandatory since 28 June 2025 for B2C websites selling products or services in the EU, and it requires WCAG 2.1 Level AA conformance. Accessibility Checker flags every criterion the EAA references and issues a compliance certificate you can attach to your accessibility statement.

Automated tools reliably detect 30 to 40 percent of WCAG issues — the machine-detectable ones like missing alt attributes, contrast ratios, ARIA misuse, and heading order. The remaining 60 to 70 percent require human review for context (whether alt text is meaningful, whether a keyboard flow is logical). For legal-grade compliance we recommend pairing the free automated scan with a manual audit.