Everything you need to make a map

Shapefile (.shp/.zip), KML & KMZ, GeoJSON, TopoJSON

CSV with lat/lng or WKT geometry

GeoTIFF / Cloud-Optimized GeoTIFF (COG) rasters

PMTiles vector & raster archives

Automatic reprojection to WGS84 via proj4

Attribute table: view, sort, search and edit feature properties inline

Field calculator — derive or update columns with SQL expressions across the whole layer

Add, rename, retype and delete fields

Draw & reshape geometry with terra-draw — points, lines and polygons, with vertex editing and snapping

Attach photos to any feature and view them in a built-in gallery and lightbox

Attach documents — PDF, Word, Excel, text and more — per feature

Reads photo & file references from KMZ / Avenza PDF-Maps, ArcGIS and Earth exports

Add and remove attachments yourself; everything is stored locally in the browser

Full SQL over your attributes, powered by DuckDB-WASM — no database to set up

Spatial operations: buffer, centroids, convex hull, simplify and dissolve (ST_* via DuckDB spatial)

Results drop back onto the map as new layers you can style and export

Runs entirely client-side — your data never leaves the browser

Per-layer symbology — colours, strokes, fills, point markers

Layer groups, ordering, visibility and opacity

Fast rendering with MapLibre GL + DuckDB-WASM

Sign in and save maps to the cloud

Shareable layers and maps with viewer / editor roles

Real-time collaborative editing