Validating xml xsd
Furthermore, you can validate fragments of XML documents.You can easily validate the page that is currently displayed in your browser with this bookmarklet. The BMEcat 2005 schemas have been adapted during my work at business Mart AG. This validator does not download any DTD or schema files, but relies on its own ones.You can validate XML documents by URL, by file upload or by direct input.Errors in XML documents will stop your XML applications.The W3C XML specification states that a program should stop processing an XML document if it finds an error.
Validates the XML string/file against the specified XSD string/file.
Also, a commenter below points to this more complete wrapper utility.