Source
Output
Source
or click to choose files
Issues
Overview
Fix options
Output settings
Example:
-27.4698, 153.0251
-27.4703, 153.0274
-27.4721, 153.0268
About & help
Free browser-based GIS tool
About EditPolygon
EditPolygon is a user-friendly but powerful online polygon editor for GIS professionals, emergency-management users and casual map users. Draw new geometry or import existing files to edit, inspect, validate, repair, simplify, compare and convert polygon data.
What you can do
- Draw polygons, rectangles, circles, lines and points.
- Edit vertices, edges, coordinates, holes and MultiPolygon parts.
- Validate geometry and apply guided polygon repairs.
- Simplify, merge, cut, intersect, clip, erase and split geometry.
- Inspect feature properties and manually edit geometry code.
- Convert and export common GIS polygon formats.
Supported geospatial formats
Work with KML, KMZ, GeoJSON, TopoJSON, ESRI Shapefile ZIP, WKT and CSV polygon data. EditPolygon also supports its own project files and includes tools for image and GeoTIFF reference workflows.
Privacy and local file processing
Your imported geometry files are processed locally in your browser. They are not uploaded to or stored by EditPolygon. The application connects to third-party services when it loads map tiles, basemaps or place-search results, and those providers may receive normal web-request information such as your IP address.
Desktop recommended
EditPolygon can be opened on a phone or tablet, but detailed geometry editing works best on a desktop or laptop with a larger screen, mouse or trackpad.
Frequently asked questions
Is EditPolygon free?
Yes. EditPolygon is completely free to use and does not require an account.
Are my polygon files uploaded?
No. Imported geometry is processed in your browser and is not uploaded to EditPolygon.
Can EditPolygon edit MultiPolygon files?
Yes. Polygon and MultiPolygon geometry can be imported, inspected and edited, including files containing multiple features or polygon parts.
How do I report a problem or suggest a feature?
Email feedback@editpolygon.com. Do not attach sensitive geometry unless you have permission to share it.
Important use information
EditPolygon is provided as a general-purpose editing tool. You remain responsible for checking geometry, coordinate reference assumptions, file compatibility and exported results before using them for operational, legal, safety-critical or emergency-management decisions. Basemaps and search results are supplied by third-party providers and may be incomplete or inaccurate.
EditPolygon works best on desktop
You can continue on this device, but detailed polygon editing is easier on a desktop or laptop with a larger screen, mouse or trackpad.