WCAG 2.1 • ADA • Section 508 • EAA
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accessibility issues
What is a web accessibility checker?
A web accessibility checker is an automated tool that scans websites for WCAG 2.1 and WCAG 2.2 violations: missing alt text, color contrast failures, keyboard navigation barriers, and invalid ARIA attributes. It returns a prioritized fix list covering ADA, Section 508, and European Accessibility Act requirements — in under 30 seconds, no signup required.
Cómo funciona
1. Introduzca su URL
Pegue la dirección de su sitio web y pulse escanear. No requiere registro.
2. Obtenga su puntuación
Reciba una puntuación detallada de accesibilidad con los problemas específicos identificados.
3. Corrija y monitorice
Siga las recomendaciones accionables. Añada nuestro widget para cumplimiento instantáneo.
Qué comprobamos
Cumplimiento WCAG 2.1 AA
Auditoría completa según los criterios de las Pautas de Accesibilidad al Contenido Web Nivel AA.
Preparación para la EAA
Comprobaciones específicas para los requisitos de la Ley Europea de Accesibilidad.
ARIA y HTML semántico
Uso adecuado de roles ARIA, landmarks y elementos HTML semánticos.
Contraste de color
El texto y los elementos interactivos cumplen las relaciones mínimas de contraste.
Navegación por teclado
Toda la funcionalidad es accesible únicamente mediante teclado.
Compatibilidad con lectores de pantalla
El contenido está estructurado adecuadamente para tecnologías de asistencia.
Precios simples y transparentes
Proteja su negocio de las multas de la EAA. Todos los precios excluyen IVA.
Starter
Perfecto para un solo sitio web
- ✓ 1 sitio web monitorizado
- ✓ Escaneos mensuales de accesibilidad
- ✓ Widget de accesibilidad
- ✓ Certificado de cumplimiento
Pro
Para empresas con múltiples sitios
- ✓ Hasta 10 sitios web
- ✓ Escaneos semanales de accesibilidad
- ✓ Widget de accesibilidad
- ✓ Certificado de cumplimiento
- ✓ Informes PDF y exportación
Agency
Para agencias y grandes organizaciones
- ✓ Hasta 50 sitios web
- ✓ Escaneos diarios de accesibilidad
- ✓ Widget de marca blanca
- ✓ Acceso API ilimitado
Frequently asked questions
Everything you need to know about the web accessibility checker and WCAG compliance.
What is a web accessibility checker?
A web accessibility checker is an automated tool that scans websites for WCAG 2.1 and WCAG 2.2 violations: missing alt text, color contrast failures, keyboard navigation barriers, and invalid ARIA attributes. It returns a prioritized fix list covering ADA, Section 508, and European Accessibility Act requirements — in under 30 seconds, no signup required.
Is this WCAG compliance tool free?
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.
Which accessibility standards does it test?
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.
See our WCAG 3.0 guide for 2026 for what’s changing in the next generation of accessibility standards.
Can the checker detect European Accessibility Act (EAA) violations?
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.
How accurate are automated accessibility scans?
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.
What WCAG checks does the scanner run?
The scanner runs 21 automated WCAG 2.1 and 2.2 checks per page, covering: missing or empty alt text (1.1.1), insufficient color contrast (1.4.3 and 1.4.11), missing form labels (1.3.1), keyboard focus visibility (2.4.7), missing language attribute (3.1.1), invalid ARIA roles and attributes (4.1.2), missing skip links (2.4.1), and more. Results are grouped by severity: critical, major, and minor.
How do I fix web accessibility issues found by the checker?
Each issue in the report includes a specific fix description. The most common fixes are: adding descriptive alt attributes to images, increasing text contrast ratios to 4.5:1 minimum, associating form inputs with label elements, ensuring all interactive elements are keyboard-focusable, and adding a visible skip-to-content link at the top of each page. The paid monitoring plan tracks whether fixes persist after deployments.
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Free Accessibility Tools
Use our free tools to check specific accessibility requirements — no signup needed.
Color Contrast Checker
Test text and background colors against WCAG AA & AAA contrast requirements.
ADA Compliance Checker
Check if your website meets ADA accessibility requirements under US law.
PDF Accessibility Checker
Verify your PDF documents meet WCAG and PDF/UA accessibility standards.
EAA Compliance Checker
Check compliance with the European Accessibility Act — mandatory since June 2025.
Statement Generator
Generate a WCAG-compliant accessibility statement for your website.