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This knowledge article includes a video tutorial and tools for validating accessibility.
Here is a video tutorial and step-by-step instructions on Identifying Web Accessibility Issues.
List of Accessibility Validator Tools
- Cynthia Says (Web-based) | Site devoted to WCAG (W3C Web Accessibility Guidelines)
- MAGpie (standalone app) | Validates websites, creates closed captions/multimedia descriptions
- Total Validator (Firefox add-on) | HTML and XHTML Validator
- Vischeck (Web-based) | Simulates how a site will look to someone with colorblindness
- W3C Page Validator (Web-based and Firefox add-on) | HTML and XHTML Validator