Akabou.jp W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Obsolete doctype. Expected “<!DOCTYPE html>”.
Bad value “”alternate”” for attribute “rel” on element “link”: The string “”alternate”” is not a registered keyword.
Bad value “”handheld”” for attribute “media” on element “link”: Expected “(” or letter at start of a media query part but saw “”” instead.
Element “g:plusone” not allowed as child of element “div” 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 “layout” not allowed on element “div” at this point.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Element name “g:plusone” cannot be represented as XML 1.0.
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