Web PagesValidation
Web Page Validator
A validator is a software program that checks whether Web pages conform to standards.
When you use a validator to check HTML, XHTML, or CSS files, the validator returns a list of errors based on the standard you have selected.
Before publishing web pages, make sure you have validated that all pages comply with W3C standards.
Validate HTML files with W3C:
Validate CSS files with W3C:
Validate XHTML files with W3C:
XHTML documents are validated against the Document Type Declaration (DTD).
In our HTML tutorial, you can read more aboutXHTML tutorial information。
Validate XML Syntax
To validate XML syntax, please refer to this site's validation URL:https://www.example.com/dom/dom-validate.html。
Other Extensions