Validation results for http://www.w3.org/People/fsasaki/

Validator Input

Document
Encoding
Schemas
Preset
Parser
XMLNS Filter
	Be lax about HTTP Content-Type
	Show Image Report
	Show Source

Warning: Being lax about non-XML Content-Type: text/html
http://www.w3.org/People/fsasaki/
Error: Bad value en-1yz for attribute xml:lang on XHTML element body: Found reserved language extension subtag.
From line 9, column 2; to line 9, column 25
</head>↩ <body xml:lang="en-1yz">↩ <p>
Syntax of language tag:
An RFC 4646 language tag consists of hyphen-separated ASCII-alphanumeric subtags. There is a primary tag identifying a natural language by its shortest ISO 639 language code (e.g. en for English) and zero or more additional subtags adding precision. The most common additional subtag type is a region subtag which most commonly is a two-letter ISO 3166 country code (e.g. GB for the United Kingdom). IANA maintains a registry of permissible subtags.

There were errors.

Total execution time 674 milliseconds.