Convert geospatial
files instantly

Maparz is a free online geospatial file converter that lets you transform vector data between ten industry-standard formats without installing any software or creating an account. You upload your file, choose an output format, and download the result — the entire conversion typically takes under five seconds regardless of file complexity.

All conversions run server-side using GDAL (Geospatial Data Abstraction Library) — specifically the ogr2ogr command-line tool that powers QGIS, ArcGIS, Google Earth Engine, and PostGIS. This means you get the same conversion quality you would from a professional GIS workstation, directly in your browser, at no cost.

Maparz supports ten of the most widely used geospatial vector formats, covering 81 unique conversion pairs. Shapefile (.shp) remains the de-facto standard for desktop GIS workflows and government open data, while GeoJSON has become the preferred format for web maps and APIs due to its human-readable JSON structure and native support in tools like Leaflet, Mapbox GL JS, and GitHub map rendering.

GeoPackage (.gpkg) is the modern OGC-endorsed replacement for Shapefile — a single SQLite file with no field-name length limit and multi-layer support. KML and KMZ are the native formats for Google Earth and Google My Maps. GPX stores GPS tracks and waypoints, while DXF bridges GIS data into CAD applications such as AutoCAD and Civil 3D. The newer FlatGeobuf format enables cloud-native streaming over HTTP range requests, and GML is mandatory for EU INSPIRE datasets and OGC Web Feature Services.

When you upload a file, Maparz sends it to a FastAPI backend where GDAL reads the source format, applies any necessary coordinate reference system reprojection, and writes the output in your chosen format. For Shapefile to GeoJSON conversions, the output is always reprojected to WGS 84 (EPSG:4326) in accordance with RFC 7946. For all other conversions, the source CRS is preserved unless a different projection is required by the target format.

Your uploaded file and the converted output are deleted from the server immediately after the download response is sent. Maparz retains no copies of your data, stores no file contents in any database, and does not use uploaded files for any purpose other than performing the requested conversion. Server access logs — which contain only IP addresses and request timestamps, not file contents — are retained for seven days for security monitoring purposes only.

Maparz is used by GIS analysts who need to deliver data to clients in a specific format, web developers who are integrating geospatial data into Leaflet or Mapbox applications, surveyors and civil engineers converting between CAD (DXF) and standard GIS formats, and researchers who receive government open data in Shapefile format and need it as GeoJSON for analysis in Python or R. The converter is also popular with students who encounter a Shapefile for the first time and need to quickly visualise it in Google Earth or GitHub.

Because Maparz requires no account and imposes no per-day conversion limits for normal use, it fits naturally into one-off data workflows where installing GDAL locally would take longer than the actual conversion. Files up to 50 MB are supported across all format pairs.