Digitalforensics.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “foo” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Errors:
The “itemtype” attribute must not be specified on elements that do not have an “itemscope” attribute specified.
Attribute “content” not allowed on element “a” at this point.
Attribute “size” not allowed on element “input” at this point.
Duplicate ID “foo”.
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Element “script” must not have attribute “async” unless attribute “src” is also specified.
The “itemprop” attribute was specified, but the element is not a property of any item.
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