Convert Google Earth and Google Maps Keyhole Markup Language (.kml) geographic placemarks, GPS tracks, and boundary polygons into clean, standard RFC 7946 GeoJSON in your browser. 100% private with zero server uploads.
Detailed side-by-side format architecture for KML Document (.kml) and GEOJSON Document (.geojson). Every conversion executes strictly within isolated browser memory without network transit.
Drag and drop your .kml file onto the working surface or use the system file dialog. File magic bytes are verified locally on device.
Select a quality preset (Lossless, Visually Lossless, Balanced, Smallest) or adjust advanced encoding switches in the options panel.
Click CONVERT to execute local WebAssembly compilation. Save the finished .geojson directly to local storage, or stage it for chaining.
Prefer local shell scripting? Run this standard POSIX command on your machine to achieve equivalent transcoding without a web interface:
# Convert KML to GEOJSON locally
pandoc input.kml -o output.geojsonWorking with files across multiple web pages? The official convrtr Chrome Extension adds native Side Panel docking, right-click context menu media extraction, and visible viewport capture. Powered by the same zero-upload client-side WebAssembly engine.
Comparing spatial data formats: GeoJSON vs KML. Which format should you use for web mapping, Leaflet, Mapbox, and GIS pipelines?
Compare GPX and KML geospatial formats. Understand GPS waypoint recording, Google Earth 3D overlays, drone mapping, and converting to GeoJSON.
KML (Keyhole Markup Language) is an XML notation for expressing geographic visualization, created by Keyhole Inc. and maintained by the Open Geospatial Consortium (OGC). It is widely used in Google Earth, Google Maps, and GIS applications.
GeoJSON is the native standard for modern web cartography libraries including Mapbox GL, Leaflet, OpenLayers, Kepler.gl, and D3.js. Converting KML to GeoJSON allows instant integration without heavy XML parsers.
Yes! convrtr extracts Point, LineString, Polygon (including inner cutout rings), and ExtendedData custom attributes into GeoJSON feature properties.
Never. All parsing runs 100% client-side in your browser memory. Your coordinates never leave your device.
KML Document (KML) and GEOJSON Document (GEOJSON) serve distinct roles across the digital workflow. Converting to GEOJSON provides optimized compatibility, modern compression efficiency, or standardized playback across web browsers, operating systems, and media production environments.
The output format (GEOJSON) is inherently lossless or supports lossless operation. Your original visual or audio fidelity is mathematically preserved without quantization artifacts.
Never. convrtr is architected with a strict zero-upload model. All processing, decoding, decompression, and encoding happen 100% locally on your machine using sandboxed WebAssembly and Web Workers. Your data never touches an external server, database, or analytics collector.
You can execute this conversion locally via command-line utilities such as ffmpeg, cwebp, or ImageMagick. For example: see the developer terminal recipe provided in the technical specifications dossier above. convrtr provides the identical local-first capability directly inside your browser without installing CLI packages.
Yes. You can drop multiple .kml files into the instrument to process them concurrently in browser Web Workers, or click 'Open in Master Studio' to queue mixed formats, configure individual targets, and export as a single ZIP archive.
Convert web media, local files, and document assets directly in Chrome Side Panel using client-side WebAssembly, zero-server uploads, and the official convrtr browser extension.
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