GML
Read OGC Geography Markup Language, inspect features, and convert XML-based GIS data.
Browser-based GIS workflow
Open an OGC Geography Markup Language file, inspect its features and attributes, check its coordinate reference system, or convert it into a format that is easier to use in web maps and desktop GIS.
Start here: Start with a .gml file or an XML document that contains valid GML features and geometry.
Choose a task
Preview GML features and identify spatial-reference metadata before sharing or converting the dataset.
Move XML-based GML data into formats suited to browser maps, portable GIS projects, or established desktop workflows.
Convert GML features into web-friendly GeoJSON for JavaScript maps, APIs, and data exchange.
Portable GISStore GML data in a single portable GeoPackage for modern desktop GIS workflows.
Legacy GISConvert GML into a Shapefile package for software and workflows that require SHP data.
Suggested workflow
Render its features and confirm that the geometry loads.
Open the viewer →Review feature properties and the dataset structure.
Inspect GML →Identify projection metadata before converting coordinates.
Detect CRS →Choose GeoJSON, GeoPackage, or Shapefile for delivery.
Convert to GeoJSON →Frequently asked questions
GML, or Geography Markup Language, is an XML-based OGC standard for encoding geographic features, geometry, attributes, and coordinate reference information.
Yes. Open the GML to GeoJSON converter to create a web-friendly GeoJSON layer directly in your browser.
GeoDataViewer processes GML files locally in your browser. Your data is not uploaded to a server for viewing, CRS detection, or conversion.
Format workflow cluster
Move between viewers, tools, converters, and practical guides for the formats most often used in GIS workflows.
Read OGC Geography Markup Language, inspect features, and convert XML-based GIS data.
View, validate, edit, and convert web-ready GeoJSON data.
Open SHP packages, check sidecars and CRS, and modernize legacy GIS data.
Open small to medium OpenStreetMap PBF extracts and continue into GIS workflows.
Preview CAD drawings and convert DXF geometry for GIS and web mapping.
Open Google Earth files and convert them for GIS, web maps, or CAD workflows.