Validator.nu Textarea Input
To use Validator.nu as a Web service by POSTing a text field, the client issues an HTTP request either to
https://html5.validator.nu/ using the POST method with an
multipart/form-data entity body. (
application/x-www-form-urlencoded is not supported.) Common parameters are encoded as form fields. The document to check is included as the value of a form field called
content field must be the last field in the submission.
The request should set the
parser parameter explicitly.
Content-Type is synthetized by selecting
application/xml depending on the
parser value and clamping the
charset MIME type parameter to
All field values including the document source must decode as UTF-8.