W3C HTML Check

Description

The “W3C HTML Check” evaluates whether the W3C HTML Validator finds no markup errors in the HTML document.

Example outcome

I asked the W3C HTML validator and I observed that there are no HTML errors.

Impact

• Visual Impairments: Misnested or broken HTML may prevent correct interpretation of content hierarchy, ARIA roles, and labels. Semantic issues can break landmark navigation or skip links.
• Motor Impairments: Focus order or interactive behavior may break due to incorrect nesting or missing elements.
• Cognitive Disabilities: Disrupted flow may confuse users relying on a clear structure.

Fixes

To address any existing HTML errors:

1. Use the W3C Validator to locate the incorrect HTML.
2. Fix it according to the Validator.

Resources

• WCAG 2.2: Understanding Success Criteria 4.1.1
• WCAG 2.2 Techniques: Technique G134: Validating web pages
• W3C Validator Tool