11v11.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “g:plusone” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “primary”.
Duplicate ID “s”.
Duplicate ID “q”.
Bad value “dofollow” for attribute “rel” on element “a”: The string “dofollow” is not a registered keyword.
End tag “aside” seen, but there were open elements.
Unclosed element “div”.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
Element name “g:plusone” cannot be represented as XML 1.0.
The first occurrence of ID “primary” was here.
The first occurrence of ID “s” was here.
The first occurrence of ID “q” was here.
The “contentinfo” role is unnecessary for element “footer”.
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