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Validator.nu Common Input Parameters
This document is obsolete.
For the current specification, see: https://github.com/validator/validator/wiki/Service:-Common-parameters
Validator.nu accepts the following parameters regardless of input method. How these parameters are communicated depends on the input method.
Validator.nu has a generic facet at https://validator.nu/ and an (X)HTML5 facet at https://html5.validator.nu/. Some parameters apply only to the generic facet. All parameters listed here are optional.
Parameters for both the generic and HTML5 facets
out
| Value | Format |
|---|---|
| none | HTML |
xhtml
|
XHTML |
xml
|
XML |
json
|
JSON |
gnu
|
GNU error format |
text
|
Human-readable text (not for machine parsing) |
showsource
The only supported value is yes which means that source is shown (if supported by the output format).
level
The only supported value is error which means that only errors and non-document errors are reported. That is, informative messages including warnings are not reported.
nsfilter
Space-separated list of XML namespace URIs. Elements (and their children) and attributes in those namespaces are filtered out between the XML parser and the validation layer. The filtered elements participate in ID uniqueness checking. The filter doesn’t apply to HTML parser.
Parameters for the generic facet only
schema
This parameter takes a space-separated list of schema IRIs (http or https). The schemas can be RELAX NG 1.0 schemas, Schematron 1.5 schemas or identifiers for built-in non-schema-based checkers.
laxtype
The only supported value is yes which means that RFC 3023 character encoding defaults are disrespected and text/html is accepted as an XML MIME type.
parser
| Value | Meaning |
|---|---|
| none | Choice of HTML or XML parser is based on Content-Type. HTML parser configuration is based on doctype. XML parser does not load external entities.
|
xml
|
XML parser, will not load external entities |
xmldtd
|
XML parser, will load external entities |
html
|
HTML parser, configuration is based on doctype. |
html5
|
HTML parser in the HTML5 mode. |
html4
|
HTML parser insisting on HTML 4.01 Strict doctype and emitting additional HTML 4 errors that are not HTML5 errors. |
html4tr
|
HTML parser insisting on HTML 4.01 Transitional doctype and emitting additional HTML 4 errors that are not HTML5 errors. |
Format-Specific Parameters
These parameters are specific to only some output formats.
asciiquotes
The only supported value is yes which means that ASCII quotes and apostrophes will be substituted for the Unicode smart quotes. This parameter only applies with out=text and out=gnu. The output may still contain Unicode characters in general.
callback
When this parameter is present, its value is taken to be the name of a JavaScript callback function to which the JSON object is given as an argument. This parameter only applies with out=json. The value must not be a JavaScript reserved word.