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Message Summary

contains errors

CSE HTML Validator Professional generated 26 error messages and 4 warning messages when checking this web page. In fact, this web page generated so many errors that HTML Validator terminated the check before it went through the entire document. These problems could damage this web page's search engine rankings as well as cause viewing problems for visitors. It is highly recommended that any problems be corrected. Why validate?

URL: <http://www.kavo.com/pl>, Charset: utf-8, Local Time: 1:55:30 AM, Date: Sunday, April 30, 2017

Messages (errors first)

TypeLineMessage
Error4Attributes of the form xmlns:prefix must not be used in HTML (but can be used in XHTML).

xmlns:article="http://ogp.me/ns/article#"
 

Error5Attributes of the form xmlns:prefix must not be used in HTML (but can be used in XHTML).

xmlns:book="http://ogp.me/ns/book#"
 

Error6Attributes of the form xmlns:prefix must not be used in HTML (but can be used in XHTML).

xmlns:profile="http://ogp.me/ns/profile#"
 

Error7Attributes of the form xmlns:prefix must not be used in HTML (but can be used in XHTML).

xmlns:video="http://ogp.me/ns/video#"
 

Error8Attributes of the form xmlns:prefix must not be used in HTML (but can be used in XHTML).

xmlns:product="http://ogp.me/ns/product#">
 

Error14This document already contains a "meta" element with the "charset" attribute. Documents must not contain both a "meta" element with http-equiv="Content-Type" and a "meta" element with the "charset" attribute.

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 

Error19The "link" element requires the "rel" or "itemprop" attribute, but not both. The "rel" attribute is used to specify the link's relationships or types, which is a set of space-separated keywords. This is an HTML5 requirement for creating a link.

<link http-equiv="x-dns-prefetch-control" content="on" />
 

Error19The "link" element requires the "href" attribute to specify the link. This is an HTML5 requirement.

<link http-equiv="x-dns-prefetch-control" content="on" />
 

Error19The "http-equiv" attribute is not valid for the "link" element. Some valid attributes for this element are: "accesskey", "amp-access", "amp-access-hide", "as", "class", "color", "contenteditable", "contextmenu", "crossorigin", "dir", "draggable", "dropzone", "fallback", "hidden", "href", "hreflang", "id", "inert", "integrity", "lang", "media", "placeholder", "sizes", "spellcheck", "style", "tabindex", "title", "translate", "type", "vocab", "on" attributes (like event handlers), and "item*" attributes.

<link http-equiv="x-dns-prefetch-control" content="on" />
 

Error133HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

...><ul class="language-switcher-locale-url"><li class="en first"><a href="http://www.kavo.com/en" class="language-link" title="International | English" xml:lang="en">International | English</a></li>
 

Error134HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="en-gb"><a href="http://www.kavo.com/uk" class="language-link" title="UK | English" xml:lang="en-gb">UK | English</a></li>
 

Error135HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="de"><a href="http://www.kavo.com/de" class="language-link" title="Deutschland | Deutsch" xml:lang="de">Deutschland | Deutsch</a></li>
 

Error136HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="de-at"><a href="http://www.kavo.com/at" class="language-link" title="Österreich | Deutsch" xml:lang="de-at">Österreich | Deutsch</a></li>
 

Error137HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="pt-br"><a href="http://www.kavo.com/pt-br" class="language-link" title="Brasil | Português" xml:lang="pt-br">Brasil | Português</a></li>
 

Error138HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="nl"><a href="http://www.kavo.com/nl" class="language-link" title="Nederland | Nederlands" xml:lang="nl">Nederland | Nederlands</a></li>
 

Error139HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="fr"><a href="http://www.kavo.com/fr" class="language-link" title="France | Français" xml:lang="fr">France | Français</a></li>
 

Error140HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="en-in"><a href="http://www.kavo.com/in" class="language-link" title="India | English" xml:lang="en-in">India | English</a></li>
 

Error141HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="it"><a href="http://www.kavo.com/it" class="language-link" title="Italia | Italiano" xml:lang="it">Italia | Italiano</a></li>
 

Error142HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="en-mea"><a href="http://www.kavo.com/en-mea" class="language-link" title="Middle East | English" xml:lang="en-mea">Middle East | English</a></li>
 

Error143HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="pl active"><a href="http://www.kavo.com/pl" class="language-link" title="Polska | Polski" xml:lang="pl">Polska | Polski</a></li>
 

Error144HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="en-sg"><a href="http://www.kavo.com/sg" class="language-link" title="Singapore | English" xml:lang="en-sg">Singapore | English</a></li>
 

Error145HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="es"><a href="http://www.kavo.com/es" class="language-link" title="España | Español" xml:lang="es">España | Español</a></li>
 

Error146HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="es-lat"><a href="http://www.kavo.com/es-lat" class="language-link" title="América Latina | Español" xml:lang="es-lat">América Latina | Español</a></li>
 

Error147HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="fr-ch"><a href="http://www.kavo.com/fr-ch" class="language-link" title="Suisse | Français" xml:lang="fr-ch">Suisse | Français</a></li>
 

Error148HTML5 requires that the "lang" attribute also be specified when "xml:lang" is used in HTML documents (this is not a requirement in XHTML/XML documents). NOTE: The value of the "lang" and "xml:lang" attributes must be a case-insensitive match.

<li class="de-ch"><a href="http://www.kavo.com/de-ch" class="language-link" title="Schweiz | Deutsch" xml:lang="de-ch">Schweiz | Deutsch</a></li>
 

Error149Terminating validation due to too many errors. Please correct the errors and recheck the document. Checking is stopped after 25 errors (this can be changed in the 'Message Output' page of the Validator Engine Options).

...="en-us last"><a href="http://www.kavo.com/us" class="language-link" title="United States | English" xml:lang="en-us">United States | English</a></li>
 

Warning 5 IE conditional comments were detected. The use of IE conditional comments is discouraged. IE conditional comments work in IE5 to IE9 but support for them has been removed in IE 10 for standards and quirks mode (but not removed for compatibility view). An example of an IE conditional comment is <!--[if IE 9]> ... <![endif]-->. Visit https://msdn.microsoft.com/en-us/library/hh801214(v=vs.85).aspx for more information.
Warning11It is highly recommended that the meta charset tag be the first child of the head tag. Consider moving this tag up so it is immediately after the "head" start tag.

<meta charset="utf-8">
 

Warning12It is recommended that this viewport meta tag be moved up. The viewport meta tag should be one of the first tags after the "head" section start tag. Only the meta charset tag (if used) and the X-UA-Compatible meta tag (if used) should come before a viewport meta tag. This tag should also be before the title element.

<meta name="viewport" content="width=device-width, initial-scale=1.0">
 

Warning27The "rel" value specifies the legacy value "shortcut icon". Although this value is allowed by HTML5 for historical reasons, it is recommended that rel="icon" be used instead.

<link rel="shortcut icon" href="http://cdn.kavo.com/sites/default/files/favicon-us_1.ico" type="image/vnd.microsoft.icon" />
 

NOT SHOWN: CSE HTML Validator Online (OnlineWebCheck.com) does not show: bad & broken links, SEO (search engine optimization) messages, mobile messages, misspelled words, accessibility messages, tip messages, JavaScript lint messages, and messages other than errors and warnings.

HTTP Headers

HTTP headers are sent by the web server to provide additional information about the server and the requested document.

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