Convert OpenStreetMap XML extracts (.osm) from openstreetmap.org and Overpass API into clean, standard RFC 7946 GeoJSON in your browser. Extracts points, paths, and polygons with 100% privacy and zero server uploads.
Detailed side-by-side format architecture for OSM Document (.osm) and GEOJSON Document (.geojson). Every conversion executes strictly within isolated browser memory without network transit.
Drag and drop your .osm 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 OSM to GEOJSON locally
pandoc input.osm -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.
OSM XML is the primary vector data format of the OpenStreetMap project. It represents real-world physical and geographic features using three fundamental topological primitives: nodes (points with lat/lon coordinates), ways (ordered sequences of nodes forming linear paths or closed polygon boundaries), and relations (groupings such as multipolygons with cutout holes).
Tagged standalone nodes become GeoJSON Points; ways tagged as linear features (highways, waterways, railways) become LineStrings; closed ways tagged as area features (buildings, landuse, parks) become Polygons; and multipolygon relations are assembled into Polygons (with inner cutout holes) or MultiPolygons, with all OSM tags preserved as feature properties.
The generated GeoJSON adheres strictly to RFC 7946 and is fully compatible with Mapbox GL JS, Leaflet, OpenLayers, Kepler.gl, QGIS, ArcGIS Pro, Google Earth Pro, and Turf.js.
Never. All XML parsing, topological assembly, geometry reconstruction, and GeoJSON synthesis take place 100% in your local browser memory.
OSM Document (OSM) 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 .osm 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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