The XHTML is a text-based file format with markup in the XML, using a reformulation of HTML 4.0. These files are well suited to be open or viewed in a web browser. XHTML was designed to be more structured, less scripting, generic; using all the existing facilities of XML and more device-independent. XHTML provides a generally worthwhile set of elements and attributes, with extension options in combination with style sheets.
You can also parse many other file formats. Please see the complete list below.