TopoJSON Converter

TopoJSON is an extension of GeoJSON that encodes topology, eliminating redundancy and reducing file size. Shared boundaries between features are stored only once.

About TopoJSON

File extensions: .topojson, .json
Type: Vector
Compatible software: D3.js, Mapbox, QGIS, GDAL/OGR, Leaflet
Limitations: Read-only in most GIS software. Requires conversion for editing. Less widely supported than GeoJSON.

Convert TopoJSON Files Now

Upload your file and convert in seconds. No installation required.

Stop emailing zip files and hoping for the best.

GeoShare: cloud preview + flexible download for every geospatial file you share. Coming soon to ConvertGeoData.