Website verification
Web page validator
A validator is a software program that can check whether a web page is standard.
When using a validator to check an HTML, XHTML or CSS file, the validator returns a list of errors based on the criteria you choose.
Please make sure you verify that all web pages comply with W3C standards before publishing them.
Verify HTML files through W3C:
Verify CSS files through W3C:
Validate XHTML files via W3C:
XHTML documents are declared according to the document type ( DTD) for verification.
You can read more information about XHTML tutorial in our HTML tutorial.
##Validate XML syntaxFor validating XML syntax, please check the verification address of this site:
http://www.php.cn/dom/dom-validate.html.