a11yTips — Provide a text alternative describing the purpose…




Provide a text alternative describing the purpose of the CAPTCHA

Make sure CAPTCHAs have text alternatives that describe their purpose

CAPTCHAs, by their very nature, raise many accessibility concerns for most users out there, including people with various disabilities. From the perspective of non-sighted screen reader users, the most important issue CAPTCHAs raise is unquestionably the fact that the ALT text value of such images cannot possibly describe what the image represents without giving the test away. Still, as informative images, CAPTCHAs need to convey meaningful information to assistive technologies. Consequently, authors need to make them accessible to users who cannot [...]


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