Thisisindexed.com 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.
Attribute “name” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Bad value “_blank><img border=” for attribute “target” on element “a”: Reserved keyword “blank><img border=” used.
Attribute “0"” not allowed on element “a” at this point.
Attribute “src” not allowed on element “a” at this point.
Bad value “generator” for attribute “rel” on element “a”: The string “generator” is not a registered keyword.
Warnings:
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Attribute “0"” is not serializable as XML 1.0.
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