Enter the file path of the feed to validate:

All feeds are validated using the following schemas:

• Relax NG compact grammar for the Atom Syndication Format. See RFC 4287, Appendix B.


• Schematron rules extracted from the Atom schema.


• XML schema for the GML/GeoRSS profile (a subset of GML 3.1.1 including gml:Point, gml:Line, gml:Polygon, and gml:Envelope).