Purdy.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “ref” not allowed on element “link” at this point.
Element “link” is missing one or more of the following attributes: “itemprop”, “property”, “rel”.
Attribute “value” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “content”, “property”.
Attribute “target” not allowed on element “img” at this point.
End tag “td” seen, but there were open elements.
Unclosed element “span”.
Element “optgroup” is missing required attribute “label”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “charset” attribute on the “script” element is obsolete.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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