Online HTML Accessibility Auditor (WCAG 2.1)
Evaluate your HTML components and web templates against WCAG 2.1 Level AA/AAA accessibility standards. Identify missing alt attributes, unlabelled form fields, broken heading orders, and empty interactive elements in real time.
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HTML Markup
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Web Content Accessibility Guidelines (WCAG) Explained
Building accessible digital products ensures individuals with disabilities—including blindness, low vision, hearing loss, learning limitations, and motor impairments—can navigate and comprehend web content seamlessly using assistive technologies like screen readers and switch devices.
The Four Core Principles of Accessibility (POUR)
- Perceivable: Users must be able to comprehend presented information (e.g., text alternatives for images, captions for multimedia, sufficient color contrast).
- Operable: Interface components must be navigable and usable by keyboard alone without requiring touch or mouse dexterity.
- Understandable: Content and UI operations must be readable, predictable, and provide helpful error identification.
- Robust: Content must be compatible with current and future user agents, assistive technologies, and valid DOM standards.