XML (Extensible Markup Language) is a popular markup language used for storing and transporting data. It is often used in web development, data exchange, and configuration files. To ensure the validity and integrity of XML files, it is important to check them for errors and well-formedness.
There are several ways to check XML files. One common method is to use an XML validator. XML validators are software tools that check XML files for conformance to the XML specification. They can identify errors such as invalid syntax, missing elements, and incorrect nesting. Some popular XML validators include XML Lint, xmllint, and the W3C XML Validator.