IconVault's XSD Validator checks an XML document against an XSD schema and reports every structural violation with a precise element path, such as `/catalog/book[2]: missing required attribute "id"`. It verifies element presence, xs:sequence order, minOccurs/maxOccurs, required attributes and basic simple types (string, integer, decimal, boolean, date, dateTime), so you get actionable errors instead of a bare pass or fail.

Be aware this is a structural check, not a full XSD 1.1 validator: it does not enforce facets, xs:choice subtleties, namespaces, keys/keyrefs or assertions. For quick schema conformance checks during development it is fast, private and dependable. Everything runs fully in your browser with nothing uploaded, and it is free to try, with a limited number of free validations before Pro is suggested.