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 GeoJSONLocalShapefile to GeoJSON converter — free online, no upload. Drop a .zip or loose .shp/.dbf/.prj/.cpg, fix DBF mojibake, preview the map, export DXF.GeoPackage to GeoJSONLocalConvert GeoPackage (.gpkg) to GeoJSON in your browser — every feature table and WKB geometry, map preview before download. Free, no sign-up, nothing uploaded.CSV to GeoJSON ConverterLocalConvert CSV with lat/lon columns to GeoJSON points in your browser — free, no sign-up, nothing uploaded. Columns auto-detected, map preview.GeoJSON to CSV ConverterLocalGeoJSON to CSV export of feature attributes with centroid lon/lat columns — free, no sign-up, nothing uploaded, all in your browser.
Spatial analysis
Buffer, overlay, dissolve and attribute/spatial join for planning metrics.
GeoJSON Buffer ToolLocalBuffer GeoJSON points, lines or polygons in km, m, mi or nm — free in your browser, no sign-in, nothing uploaded.GeoJSON Overlay ToolLocalOverlay two GeoJSON polygon layers — intersect, erase, union or spatial join — free in your browser, no sign-in, nothing uploaded.GeoJSON Dissolve ToolLocalDissolve GeoJSON polygons into one — merge adjacent or overlapping polygons, remove internal borders, verify on the map. Free, local, no upload.GeoJSON Join ToolLocalJoin two GeoJSON layers by matching keys or point-in-polygon — merge attributes locally in your browser, free with no sign-in, nothing uploaded.
Cartography & publishing
Simplify geometry, export TopoJSON/GeoParquet or generate PMTiles for public maps.
GeoJSON Simplify ToolLocalSimplify GeoJSON online — Douglas-Peucker, topology-preserving or keep-percentage modes, with before/after vertex counts. Free, no upload, no sign-in.GeoJSON to TopoJSONLocalFree GeoJSON to TopoJSON converter in your browser — shared arcs, smaller files, adjustable quantization, no upload, no sign-up.GeoJSON to PMTilesLocalTile GeoJSON into a single PMTiles file in your browser — set the zoom range, inspect it in-page, host it on R2 or any CDN. Free, no sign-up, no upload.GeoJSON to GeoParquetLocalConvert GeoJSON to GeoParquet in your browser — columnar output that DuckDB and GeoPandas read directly. Free, no sign-up, nothing uploaded.
Basemaps & submission docs
Measure parcels, edit maps, convert DXF and GIS, and merge submission PDFs.
GeoJSON Area CalculatorLocalCalculate GeoJSON area, length, vertex count and bounding box in your browser — free, no sign-in, nothing uploaded.GeoJSON Map EditorLocalEdit GeoJSON on an interactive map — draw points, lines and polygons, edit attributes, undo/redo, then export. Free in your browser, nothing uploaded.DXF to GeoJSON ConverterLocalConvert DXF to GeoJSON for QGIS, Mapbox and Leaflet in your browser — free, no sign-up, nothing uploaded. Layer names are kept as properties.Merge PDF Files & Combine into OneHybridMerge PDF files in your browser — remove or rotate pages, drag to reorder pages; bookmarks point to the right pages. Free, no sign-in, no upload under 10 MB.
City-scale data and tile publishing
Pro is $15/mo: 500 cloud credits/month and 100 MB per file; PMTiles generation and CRS reprojection run server-side for public maps and open data.