Convert KMZ to GeoJSON Online — Free & Instant
KMZ files are ZIP-compressed KML files typically exported from Google Earth. Converting KMZ to GeoJSON gives you a format that works natively in web browsers, Leaflet maps, Mapbox GL JS, and GitHub. Maparz automatically decompresses the KMZ, extracts the KML, and converts it to GeoJSON in a single step.
Converter
When to convert KMZ to GeoJSON
- Converting Google Earth project files (.kmz) for web map development
- Using KMZ exports from GPS devices in JavaScript mapping applications
- Preprocessing KMZ field data for analysis with Turf.js
- Converting KMZ to GeoJSON for storage in GitHub repositories
How to convert KMZ to GeoJSON
- 1
Upload KMZ
Drop your .kmz file on the upload zone. It is automatically decompressed.
- 2
Select GeoJSON
GeoJSON is pre-selected for this page.
- 3
Download and use
The .geojson file is ready for use in any web mapping library.
About KMZ format
KMZ is a ZIP-compressed version of a KML file. It typically contains a doc.kml file at its root along with any referenced images, icons, or overlays. KMZ files are smaller than their KML counterparts, making them easier to share by email or embed on web pages. They are supported by Google Earth, QGIS, ArcGIS, and many online mapping tools. KMZ files can be uploaded directly to Google My Maps.
Strengths
- +Smaller than raw KML
- +Can bundle images and overlays
- +Widely accepted by mapping tools
About GeoJSON format
GeoJSON is an open standard geospatial data format based on JSON, defined in RFC 7946. It supports all geometry types (Point, LineString, Polygon, MultiPolygon, etc.) and arbitrary properties per feature. GeoJSON is the preferred format for web mapping because browsers can parse it natively and libraries like Leaflet, Mapbox GL, and D3 consume it directly. GitHub renders GeoJSON files on a map automatically. It uses WGS 84 (EPSG:4326) as its coordinate reference system.
Strengths
- +Native browser support (JSON)
- +Human-readable and editable
- +Single file — easy to share
- +First-class support in web mapping libraries
Frequently asked questions
What is the difference between KMZ and KML?
KMZ is a ZIP-compressed KML file. It is smaller and can embed images. The geometry and attribute data are identical to the uncompressed KML.
Can I use the GeoJSON in Leaflet directly?
Yes. Use Leaflet's L.geoJSON() function to add the GeoJSON layer to your map.
Does Maparz handle KMZ files with embedded images?
Maparz extracts and converts the geometry from the KMZ. Embedded images and icons are not included in the GeoJSON output.