Verificador de Accesibilidad
Run quick accessibility checks on any page’s HTML
100% gratis. Esta herramienta necesita nuestro servidor para hacer el trabajo, así que lo que envías se procesa allí y luego se descarta: nunca se almacena.
Static HTML analysis - a full audit also needs manual keyboard and screen-reader testing.
Acerca de esta herramienta
Run quick accessibility checks against a page's HTML, flagging common issues that make a site harder to use for people with disabilities - like missing alt text on images, poor color contrast, or missing form labels. It's a fast first-pass audit, not a full replacement for comprehensive accessibility testing.
Cómo usar esta herramienta
- Analyze page markupScan HTML for common WCAG-related structural and attribute issues.
- Review flagged findingsCheck missing labels, alt text, contrast, and heading/navigation problems.
- Apply accessibility fixesUpdate templates/components to address root causes, not one-off pages only.
- Retest and verify manuallyRun checker again and validate with keyboard/screen-reader walkthroughs.
Por qué usarla
- Finds high-impact accessibility issues quickly.
- Improves usability for all users, not only assistive-tech users.
- Supports compliance readiness and audit preparation.
- Great first pass before deeper manual accessibility testing.
Usos comunes
- Pre-release QA for public-facing websites.
- Improving accessibility scores in procurement/compliance contexts.
- Auditing legacy pages for WCAG modernization.
- Teaching teams common accessibility anti-patterns.
Consejos para mejores resultados
- Automated checks are a start; always pair with manual keyboard tests.
- Fix design-system components to eliminate repeated page issues.
- Use meaningful alt text for informative images only.
- Track recurring findings to improve content team workflows.
Errores a evitar
- Treating automated pass as full accessibility compliance proof.
- Adding decorative alt text that creates screen-reader noise.
- Fixing one page while reusable templates remain broken.
- Ignoring focus order and keyboard navigation behavior.
Preguntas frecuentes
No - automated checks catch common, detectable issues (like missing alt text or contrast problems) but can't evaluate everything accessibility requires, like whether content makes logical sense to a screen reader user or whether keyboard navigation genuinely works well. Use this as a helpful first pass, not a complete accessibility audit.
Common ones include missing image alt text, insufficient color contrast, missing form labels, and improper heading structure - the kinds of issues automated tools can reliably detect from HTML alone.
It ensures people with visual, motor, or cognitive disabilities can actually use your site, and is increasingly a legal/compliance requirement in many regions - beyond that, many accessibility fixes (like clear headings, good contrast) also improve usability for everyone.
Yes. Accessibility Checker is free for normal use with no account required, and ToolBox does not add a watermark to your result.
Most tools in this category run in your browser so the file stays on your device. If a tool needs a temporary server job, files are handled for that job only and are not kept as a lasting archive.
No install needed. Open Accessibility Checker in your browser, add your file or paste your input, then download or copy the result.
Yes on modern mobile browsers. For large files, a desktop browser is usually faster and more reliable.
Try a different quality or format setting, use a smaller input, or open a related tool (for example compress before convert). Keep a copy of the original file before replacing it.
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