Muksun.fm 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.
A “charset” attribute on a “meta” element found after the first 1024 bytes.
A document must not include more than one “meta” element with a “charset” attribute.
The element “header” must not appear as a descendant of the “header” element.
Element “div” not allowed as child of element “h1” in this context. (Suppressing further errors from this subtree.)
Bad value “prettyPhoto” for attribute “rel” on element “a”: The string “prettyPhoto” is not a registered keyword.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “pubdate” not allowed on element “time” at this point.
Bad value “” for attribute “target” on element “area”: Browsing context name must be at least one character long.
Warnings:
The “banner” role is unnecessary for element “header”.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Empty heading.
The “navigation” role is unnecessary for element “nav”.
The “contentinfo” role is unnecessary for element “footer”.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
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