Neovlivni.cz W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Element “title” not allowed as child of element “head” in this context. (Suppressing further errors from this subtree.)
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “meta” is missing one or more of the following attributes: “charset”, “content”, “http-equiv”, “itemprop”, “name”, “property”.
Attribute “pagespeed_no_defer” not allowed on element “script” at this point.
End tag “li” seen, but there were open elements.
Unclosed element “span”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Heading cannot be a child of another heading.
End tag “div” seen, but there were open elements.
Unclosed element “h4”.
Attribute “href” not allowed on element “button” at this point.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Empty heading.
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