Made for Urban Planning & Public Data
Urban planning & public data: zoning, accessibility and public maps in one browser
Got Shapefiles/GeoJSON for zoning, buffering and cartography, or need to publish a public map — no desktop GIS required.
Geodata is parsed locally by default, sensitive parcels and population data stay on device
Format conversion plus buffer, overlay and simplify for planning analysis
Export PMTiles/GeoParquet for web maps and open-data publishing
Data preparation
Convert Shapefile/GeoPackage/CSV to and from GeoJSON for one analysis base.
Shapefile to GeoJSONLocalConvert a Shapefile to GeoJSON — drop a .zip or loose same-name .shp/.dbf/.prj/.cpg files together (no zipping needed), with DBF encoding option; optional DXF export. Locally in your browser.GeoPackage to GeoJSONLocalConvert GeoPackage (.gpkg) to GeoJSON (read feature tables and WKB geometry), locally in your browser.CSV to GeoJSONLocalConvert CSV with latitude/longitude columns to GeoJSON points, locally in your browser.GeoJSON to CSVLocalExport GeoJSON feature attributes to CSV with centroid lon/lat, locally in your browser.
Spatial analysis
Buffer, overlay, dissolve and attribute/spatial join for planning metrics.
GeoJSON BufferLocalGenerate buffers around GeoJSON features (point/line/polygon) with selectable units, locally in your browser.GeoJSON OverlayLocalOverlay two GeoJSON layers in the browser: intersect/clip, erase, union and spatial join — locally, nothing uploaded.GeoJSON DissolveLocalDissolve adjacent/overlapping GeoJSON polygons into one, removing internal boundaries, locally in your browser.GeoJSON Attribute & Spatial JoinLocalJoin two GeoJSON layers in your browser: attribute join by matching keys, or spatial join merging polygon attributes into contained points.
Cartography & publishing
Simplify geometry, export TopoJSON/GeoParquet or generate PMTiles for public maps.
GeoJSON SimplifyLocalSimplify GeoJSON vertices with fast (Douglas-Peucker) or topology-preserving mode (no gaps on shared edges) to reduce file size, locally in your browser.GeoJSON to TopoJSONLocalConvert GeoJSON to TopoJSON (shared topology, smaller files), locally in your browser.GeoJSON to PMTilesLocalTile GeoJSON into vector tiles packed as a single PMTiles file locally in your browser (geojson-vt + in-house PMTiles writer) — nothing is uploaded. Ideal for R2/CDN distribution.GeoJSON to GeoParquetLocalConvert GeoJSON to GeoParquet (columnar, great for large datasets), locally in your browser.
Basemaps & submission docs
Measure parcels, edit maps, convert DXF and GIS, and merge submission PDFs.
GeoJSON MeasureLocalCompute area, length, vertex count and bounding box of GeoJSON, locally in your browser.GeoJSON Map EditorLocalView and edit GeoJSON on an interactive MapLibre map: basemaps, draw points/lines/polygons, export — locally in your browser.DXF to GeoJSONLocalConvert DXF drawings to GeoJSON for QGIS/Mapbox/Leaflet, locally in your browser.Merge PDFHybridCombine multiple PDFs into one, in order.
City-scale data and tile publishing
Pro is $12/mo: 50 cloud tasks/day and 500 MB per file; PMTiles generation and CRS reprojection run server-side for public maps and open data.