Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
An extension to GeoJSON that encodes topology.
JavaScript Makefile

Fetching latest commit…

Cannot retrieve the latest commit at this time

Failed to load latest commit information.
bin
examples
lib/topojson
src
test
LICENSE
Makefile
README.md
component.json
index.js
package.json
topojson.js

README.md

TopoJSON

TopoJSON is an extension of GeoJSON that encodes topology. Rather than representing geometries discretely, geometries in TopoJSON files are stitched together from shared line segments called arcs. TopoJSON eliminates redundancy, offering much more compact representations of geometry than with GeoJSON; typical TopoJSON files are 80% smaller than their GeoJSON equivalents. In addition, TopoJSON facilitates applications that use topology, such as topology-preserving shape simplification, automatic map coloring, and cartograms.

Want to learn more? See the wiki.

Something went wrong with that request. Please try again.