WebHACC + is a conformance checker (or validator) for Web documents, + supporting latest Web standards including + HTML5, + Atom 1.0, + CSS3.
+ + +WebHACC + は、 Web 文書のための適合性検査器 (妥当性検証器) です。 + HTML5、 + Atom 1.0、 + CSS3 + などの最新の Web 標準に対応しています。
+ + + + +$0
+{text}
is not allowed for HTML document.The character encoding used for the document is not allowed @@ -31,9 +74,9 @@
$0
+{text}
should not be used for HTML document.The character encoding used for the document is not recommended @@ -42,19 +85,20 @@
{text}).Use of UTF-8 as the character encoding of the document is encouraged, though the use of another character encoding is still conforming.
The conformance checker cannot detect whether the input document met the requirements on character encoding, since the document @@ -64,8 +108,8 @@
$0
+ character encoding {text}
is not a superset of ASCII.The document is not labeled with character encoding name @@ -154,7 +198,6 @@
{text}, a character encoding declaration specifying
@@ -202,52 +245,36 @@
<$0>
- is not allowed after the end tag </html>.The start or end tag of an element appears after the
- html element has been closed. The document is
- non-conforming.
Any content of the document other than comments
- must be put into the html element.
<$0>
- is not allowed after the end tag </body>.The start or end tag of an element appears after the
- body element has been closed. The document is
- non-conforming.
Any content of the document other than head
- contents and comments must be put into the body
- element.
", ', and =."
or ' if it contains a ", ', or
= character.In an unquoted attribute value, a character "
+ (U+0022 QUOTATION MARK),
+ ' (U+0026
+ APOSTROPHE), or =
+ (U+003D EQUAL SIGN)
+ is contained. These characters are not allowed in unquoted attribute
+ values, since they are used to quote attribute values or to separate
+ attribute name and value.
This error is also raised if one try to use empty attribute
+ value like <foo bar= baz=>;
+ in this example, baz= is
+ treated as an invalid attribute value for the attribute
+ bar, not as another attribute.
& character must
be escaped as &.</ string is not followed
by a tag name.< character is not followed
by tag name or by a ! character.&#.&#x.<! is not followed
by --.</ is not followed
by tag name.{text} is not allowed.U+000D (CARRIAGE RETURN)
@@ -456,7 +475,6 @@
-- sequence
in a comment.{text}.<>) is not
allowed.</>) is not
allowed.The attribute value is not specified after the =
+ (U+003C EQUAL SIGN)
+ character.
When an attribute value is empty, the = character after
+ the attribute name must be specified as:
<foo bar>
Instead, quotation marks can be used to explicitly represent that + the attribute value is empty, as:
+ +<foo bar="">
... or like:
+ +<foo bar=''>
{text} is not allowed./>) cannot be
used for this element.<!DOCTYPE , the
document type name must be specified.PUBLIC, no
oublic identifier is specified.; character.<!DOCTYPE, there
must be at least a white space character before the document type
@@ -592,21 +626,18 @@
SYSTEM, no
system identifier is specified.<?...>) is not allowed in HTML
@@ -659,77 +690,66 @@
PUBLIC.SYSTEM.-->.DOCTYPE is not closed by a
> character.>
character.<{text}> is after the html element
+ is closed.html 要素が閉じられた後に開始タグ
+ <{text}> があります。</{text}> is after the html element
+ is closed.html 要素が閉じられた後に終了タグ
+ </{text}> があります。<{text}> is
not allowed after the body is closed.</{text}> is
not allowed after the body is closed.body is closed.<{text}> is
not allowed after the frameset is closed.</{text}> is
not allowed after the frameset is closed.frame is closed.{text} element cannot be
inserted between head and body
elements.<{text}> is
not allowed after the html is closed.The start tag of an element appears after the
+ body element has been closed. The document is
+ non-conforming.
Any content of the document other than head
+ contents and comments must be put into the body
+ element.
</{text}> is
not allowed after the html is closed.The end tag of an element appears after the
+ body element has been closed. The document is
+ non-conforming.
Any content of the document other than head
+ contents and comments must be put into the body
+ element.
html is closed.image element is
obsolete.<{text}>
is not allowed in the body element.button element cannot be
nested.<form> is
not allowed in a form element.<{text}> is
not allowed in a framset element.</{text}> is
not allowed in a frameset element.frameset element.<head>
is not allowed in the head element.DOCTYPE appears after any
element or data character has been seen.nobr element cannot be
nested.{text} element is not
allowed in a noscript element in the
@@ -945,21 +978,18 @@
</{text}>
appers before the noscript element is closed.noscript element is not closed
before the end of file.noscript element in the head
@@ -967,28 +997,24 @@
<{text}>
is not allowed in a select element.</{text}>
is not allowed in a select element.<{text}>
is not allowed in a table element.</{text}>
is not allowed in a table element.table element, outside of the caption and cells.isindex element is
obsolete.tr
element is missing.base element with the
+ href attribute specified cannot be placed after
+ any attribute with a URL.base element with the
+ target attribute specified cannot be placed after
+ any element that defines a hyperlink.$0
- element as a child of this element.{text} as a child of this element.The content model of the element is so defined that it
must contain a $0 child element.
@@ -1244,8 +1298,35 @@
{text} in the Atom namespace as a child of this
+ element.link element
+ whose rel attribute is set to alternate as a
+ child of this element.link element
+ whose rel attribute is set to self as a
+ child of this element.hn element descendant.area element cannot be used
+ outside of a map element.base
+ element.datatemplate element, only
+ rule elements are allowed.details element, only at the
+ beginning of the element a lengend element
+ may be used.figure element, only at the
+ beginning or only at the end of the element a lengend element
+ may be used.style element without
+ scoped attribute is not allowed in this context.noscript element in the head element.style element with
+ scoped attribute is not allowed in the head
element.title
+ element.head element.head
+ 要素の最初の子要素ではありません。The character encoding declaration
+ (<meta charset="..."> or
+ <meta http-equiv=Content-Type content="text/html; charset=...">
+ must be the first child element in the head element.
The character encoding declaration have to occur near the beginning + of the document to ensure that Web browsers can be determine the + character encoding of the document.
+ +The title element and other metadata elements must
+ appear after any character encoding declaration is processed.
An element that is not allowed as the root element is used as the root element of the document. The document is @@ -1342,9 +1531,84 @@
ruby
+ element.content element.The element is not one of elements allowed + in the latest version of relevant specifications.
+ +The element cannot be used.
+ +event-source elementeventsource
+ element (no hyphen).m elementmark
+ element.$0
+ modules="ContentChecker::HTML">
+ {text}
element before this element.There must be an element before another element, but there @@ -1355,14 +1619,20 @@
rp element must
+ be a parenthesis.$0
+ modules="ContentChecker::HTML">
+ {text}
is not specified.A required attribute is not specified. The document @@ -1384,7 +1654,37 @@
object at least one of
+ data and type attributes must be
+ specified.base element, at least one of
+ href and target attributes must be
+ specified.meta element with the
+ content attribute specified, exactly one of
+ name and http-equiv attributes must be
+ specified.meta element, exactly one of
+ name, http-equiv, and charset
+ attributes must be specified.{local-name} is not allowed for
{element-local-name} element.xml:lang attribute is not
- allowed in HTML document.ismap attribute may only be
+ used for the image contained in an a element.The xml:lang attribute is not allowed in
- HTML document. The document is non-conforming.
The attribute is not one of attributes allowed for the element + in the latest version of relevant specifications.
+ +The attribute cannot be used.
+ +align attribute (various HTML elements)border attribute (various HTML elements)autosubmit attribute (menu element)language attribute (script element)<script>
/* JavaScript code */
</script>
type attribute, as follows:
+ <script type="text/javascript">.<script type="text/vbscript">.Use of the xml:lang attribute is conforming
- only in XML documents.
xml:lang attribute in HTML
+ document is ignored.The xml:lang attribute does not have an effect in
+ HTML document.
The xml:lang attribute is only applicable to XML
+ documents. In HTML document, it is only allowed to ease migration
+ from XML.
To specify natural language information in HTML document,
use lang attribute instead.
charset attribute is not
allowed in XML document.lang attribute is not
- allowed in XML document.The HTML lang attribute is not allowed in
- XML document. The document is non-conforming.
The lang attribute in null
- namespace for HTML elements is conforming only in
- HTML documents.
noscript element cannot be
+ used in XML document.To specify natural language information in XML document,
- use xml:lang attribute instead.
xml:lang attribute in no namespace
+ is only allowed in HTML document.xml:lang
+ 属性が認められているのは HTML 文書中だけです。xmlns attribute
in the null namespace is not allowed in
XHTML document. The document is non-conforming.xml:lang attribute is only allowed
+ when the lang attribute is specified.xml:lang 属性を指定できるのは
+ lang 属性が指定されている時だけです。$0
- is not registered.{@}
+ is not allowed. It must be an empty string or a string
+ {local-name}.{value} is not the preferred name of that
+ character encoding.{value} is not a registered name.The specified character encoding name is not registered to IANA. Use of registered character encoding name @@ -1524,10 +1904,10 @@
$0 is a private
- character encoding name.{value} is a private name.The specified character encoding name is a private name and not registered to IANA. Use of registered character @@ -1546,10 +1926,10 @@
{value}
+ is syntactically not a character encoding name.The attribute value must be a character encoding name. However, the specified value is not a character encoding name syntactically. @@ -1559,8 +1939,105 @@
coords attribute have to
+ contain three (3) numbers (specified:
+ {text}).coords attribute have to
+ contain four (4) numbers (specified:
+ {text}).coords attribute have to
+ contain more than or equal to six (6) numbers (specified:
+ {text}).coords attribute have to
+ contain even number of numbers (specified:
+ {text}).{value}
+ is out of range.{@} is not one
of them.{@}
+ is not allowed.{value}.{value}
+ appears in the attribute value twice.title attribute
+ is empty.title 属性の値が空です。The title attribute value of the link
+ element that defines an alternate style sheet is an empty value.
A link element whose rel attribute
+ is alternate stylesheet defines an alternate style sheet.
+ An alternate style sheet must be associated with a name using the
+ title attribute. The name cannot be empty.
# character.id attribute value is
+ different from the name attribute value.$0
+ modules="ContentChecker::HTML">
+ {value}
cannot be specified for this element.The specified link type cannot be used for the element. @@ -1630,9 +2188,22 @@
{@}
+ is not an allowed value.$0
+ modules="ContentChecker::HTML">
+ {value}
is non-conforming.The specified link type is non-conforming, and therefore @@ -1655,11 +2226,17 @@
$1
- is different from document character encoding
- $0.{value} is different from the actual document
+ character encoding {text}.The specified character encoding name is different from the character encoding of the document. The document @@ -1667,6 +2244,60 @@
{value} matches to the actual character encoding
+ name cannot be checked since the input is not a byte stream.usemap attribute references
+ no image map.contextmenu attribute references
+ no menu.id
+ is {value} in the same table.Refresh pragma.template.{text}
+ is reserved and cannot be used for an arbitrary prefix.{text}
+ is reserved and cannot be used for an arbitrary namespace name.$0
+{value}
is proposed but not accepted yet; it should not be
used until it has been accepted.{value}
+ is not a valid value.id attribute.template
+ attribute is not a template.{value} is reserved.{value} is not
+ allowed in this attribute.NCName.xml:lang attribute
+ is different from the value of the lang attribute.xml:lang 属性の値が lang
+ 属性の値と異なります。The value of the xml:lang attribute (either the
+ lang attribute in the xml (i.e.
+ http://www.w3.org/XML/1998/namespace) namespace, or
+ the xml:lang attribute in no namespace) for the element has
+ different value than that of the lang attribute in no
+ namespace.
For historical reason, there are two attributes applicable to HTML
+ elements to specify language information of an element: lang
+ and xml:lang. In HTML documents, only lang
+ attribute in no namespace is allowed and take effect; the
+ xml:lang attribute in no namespace is ignored in HTML
+ documents. In XHTML documents, both lang and
+ xml:lang attributes are allowed.
In general, only the lang attribute need to be
+ specified for an element.
If both lang and xml:lang attributes are
+ specified on the same element, their values must be the same value.
xml:lang 属性 (xml (=
+ http://www.w3.org/XML/1998/namespace) 名前空間の
+ lang 属性や名前空間に属さない
+ xml:lang 属性) の値が同じ要素の名前空間に属さない
+ lang 属性の値と異なっています。
歴史的な理由により、 HTML 要素の言語指定のための属性は
+ lang と xml:lang の2つがあります。 HTML
+ 文書では名前空間に属さない lang 属性だけが認められており、
+ かつ効力があります。名前空間に属さない
+ xml:lang 属性は HTML 文書では無視されます。 XHTML 文書では
+ lang 属性も xml:lang 属性も認められています。
通常、要素の言語情報は lang
+ 属性だけを使って指定すれば十分です。
lang 属性と xml:lang
+ 属性の両方を同じ要素に指定する場合、
+ 両者の値は同じでなければなりません。
colspan attribute
results in creating a table column that does not contain
any cell anchored to it.td or
@@ -1750,54 +2491,180 @@
rowspan attribute
+ results in creating a table row that does not contain
+ any cell anchored to it.e4x.{value}, is syntactically not a valid
+ attribute name.{value} is used.{value} is used.{@}: An obsolete
- subtype is used.The specified Internet Media Type is registered with status - of OBSOLETE.
+ modules="IMTChecker"> +{value} is used.{value} が使われています。The specified Internet Media Type is registered with its intended + usage as OBSOLETE.
text/ecmascripttext/ecmascript is obsoleted in
favor of application/ecmascript. Note that
- text/javascript would be better alternative
- for many cases.text/javascript would be the better alternative
+ in many cases.
text/javascripttext/javascript is obsoleted by
IETF with backward incompatible alternate
application/javascript for architectural
- purity. Realist may ignore this warning.{text} have to
+ be specified for the Internet Media Type
+ {value}.{value} is not
+ allowed for this Internet Media Type.{@}: A private
- (x- or x.) subtype is used.{value} is not encouraged.{value} is not encouraged.{value} is
+ syntactically not a valid subtype value of an Internet Media Type.{value} is
+ syntactically not a valid type.{value}
+ is used. The conformance checker cannot determine whether use of this
+ parameter is valid or not.{value} is used. At the time of the update of
+ the conformance checker's Internet Media Type database, the subtype is
+ not reigstered to the IANA registry. The subtype, however, might be
+ registerd to the IANA registry thereafter. Please consult the IANA
+ registry.{@}: The subtype is
- not registered to IANA.{value} is not encouraged since it is not
+ part of the IANA registry.{value} is not encouraged since it is not
+ a standardized type.{text} is not defined.. or
..) occurs in an absolute reference././ character.The IRI does not end with a /. If there is an
authority component in an IRI, a / should be present
@@ -1850,8 +2746,25 @@
{value}
+ should be spelt in lowercase.The scheme part of the IRI is written in uppercase letter.
@@ -1894,10 +2831,277 @@{value} is
+ not supported by the conformance checker.) character.an+b have to be integers.an+b is
+ syntactically incorrect.] character.:lang
+ selector is not closed by a ) character.{value}
+ is not declared.=) is missing.*
+ is not followed by a | character.:-manakai-contains pseudo-class
+ selector.* for the universal selector) is missing.:not selector
+ is not closed by a ) character.:{value}
+ is not supported by the conformance checker.::{value}
+ is not supported by the conformance checker.@{text} rule is not
+ allowed here.@{text} rule is
+ syntactically incorrect.<{text}> is
+ already specified.hand is not valid as
+ <'cursor'>.<{text}>.: character is missing after
+ a property name.; character is missing at the
+ end of the property.@{value} rule is
+ not supported by the conformance checker.{value} is
+ not supported by the conformance checker.The specified document is not a cache manifest.
@@ -1912,12 +3116,29 @@
CACHE and MANIFEST).
The attribute is in the call for implementation stage.
+ +Usually, using the attribute is safe. However, it is a new feature + so that it might not be implemented correctly. If it is found that + the feature is hard or impossible to implement, the feature + might be revised, or in some case it might be dropped.
+The attribute is in the last call for comments stage.
+ +The attribute is relatively mature, though the standardization + is not done yet. It may be used for experiments. Since it is a new + feature, it might not be implemented correctly or at all. If it is + found that the feature is hard or impossible to implement, the feature + might be revised or might be dropped.
+The attribute is documented in a working or editor's draft + and not yet completed.
+ +The attribute should not be used for any practical purpose. + The feature might be drastically changed later or might be + entirely removed.
+The attribute is not part of any standard or draft the conformance + checker is aware of.
+ +The attribute should not be used for any practical purpose unless + there is really a standard that defines the attribute.
+{value}.{value} is
+ syntactically invalid.{value} in lowercase.mul should not be
+ used.{value}.{value}
+ is syntactically invalid.und should not be
+ used.{value}) is not used.{value}
+ is syntactically invalid.{value} in uppercase.{value}.{value} is not allowed.http://www.w3.org/1999/02/22-rdf-syntax-ns#.parseType attribute.{local-name} is not supported; it might or
might not be conforming.{local-name} of element
{element-local-name} is not supported;
@@ -2004,9 +3408,9 @@
$0 is not
+{value} is not
standardized or registered at the time of the release of the conformance
checker; it is non-conforming unless it now has been
registered.addr-spec
+ is not supported; it might or might not be conforming.$0 is not supported;
+ language {text} is not supported;
it might or might not be conforming.$0 is not supported;
+ language {text} is not supported;
it might or might not be conforming.content element with type
+ {text} is not supported.No more information is available for this topic.
+これについての詳しい情報はありません。
+A violation to a hard requirement of the specification. + The document is non‐conforming.
+A violation to a requirement of the specification. + The violation might be legitimize in some case. Otherwise, + the document is non‐conforming.
+A warning is an advice from the conformance checker + to avoid solving a problem in a confusing or possibly wrong way. + It does not affect to the conformance of the document, and + may sometimes be inappropriate.
+An informational message just provides an additional information + on the feature used in the document or the status of the retrieval + or so on. + It does not affect to the conformance of the document.
+Some feature that is not supported by the conformance checker + is used in the document.
+| Level | -Conforming? | -Description | -
|---|---|---|
| MUST‐level error | -Non‐conforming. | -A violation to a hard requirement of the specification. -The document is non‐conforming. | -
| SHOULD‐level error | -Non‐conforming, but in some case -conforming. | -A violation to a requirement of the specification. -The violation might be legitimize in some case. Otherwise, -the document is non‐conforming. | -
| Warning | -Conforming. | -A warning is an advice from the conformance checker to avoid -to solve a problem in a confusing or possibly wrong way. -It does not affect to the conformance of the document, and -may sometimes be inappropriate. | -
| Information | -Conforming. | -An informational message just provides an additional information -on the feature used in the document or the status of the retrieval -or so on. -It does not affect to the conformance of the document. | -
| Not supported | -Unknown. | -Some feature that is not supported by the conformance checker -is used in the document. | -