Standards bodies
GML 3.2.1 schema
The entry point to the Geography Markup Language grammar — the schema most geospatial XML you will meet is validated against.
GML is what sits underneath a great deal of government geospatial data, and its schema is a large composition of imported modules rather than one file. This is the document that pulls them together.
It is a good example of a schema whose real size is invisible: a kilobyte of imports that expands into hundreds.
- Publisher
- Open Geospatial Consortium
- Host
schemas.opengis.net- Format
- XML Schema (XSD)
- Root when listed
- schema (2026-08-18)
- Size when listed
- 1.1 KB
What the last check saw
Fetched and parsed, 1.1 KB.Checked 2026-08-18 16:02 UTC
Structure
- Root element
schema- Detected as
- xml
- Nodes
- 11
- Namespaces
http://www.opengis.net/gml/3.2http://www.w3.org/2001/XMLSchema
/schema×1/schema/annotation×1/schema/annotation/appinfo×1/schema/annotation/documentation×1/schema/include×7
Recent checks
- ok2026-08-18 16:02 UTC
- ok2026-08-18 16:01 UTC
Where it reaches
- FormatsKMLThe other geospatial XML, and how the two differ.
- FormatsGPXThe simpler format for tracks and waypoints.
Also in this category
- The XML Schema schemaThe schema for schemas: XSD's own grammar, written in XSD, at the URI every schema document declares as its namespace.
- The sitemaps.org 0.9 schemaThe normative grammar for a sitemap — the one that says changefreq has eight permitted values and priority is capped at 1.0.
- The RFC indexEvery RFC ever published, with authors, dates, status and the obsoletes/updates graph between them — as one XML document.
- IANA media type registryThe authoritative list of registered media types, including the application/xml and +xml conventions this whole site depends on.
Get started
Bring order to the XML your team can't afford to ignore.
Create a free account and get a private workspace to search, validate, diff, and monitor your XML feeds, sitemaps, schemas, and vendor integrations.