Make big rasters map-ready
Turn a plain GeoTIFF — or a huge drone orthomosaic — into a Cloud-Optimized GeoTIFF (COG) that DropMaps streams fast, with overviews and internal tiling.
Free map file viewers & converters
Open almost any map file in your browser, see it on a map, and save it as another format. No signup, nothing to install, and your files stay on your computer.
Drop your map file here
or
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Switch to the DropMaps tab to see your map.
Your file stays on your computer — it opens in your browser, not on our servers.
Open a file
Shapefile viewer
Open and view shapefiles (.shp) online for free. Drop a zipped shapefile onto the map to see it, browse its data table, and export it. No install, no signup.
KML / KMZ viewer
Open KML and KMZ files online for free, no Google Earth needed. See places, paths and areas on a map, read their details and export them. Works in your browser.
GeoJSON viewer
View GeoJSON files on a map online for free. Drop a .geojson or .json file to see it, browse the data table, style it and edit it. Runs in your browser.
CSV to map
Turn a CSV spreadsheet with latitude and longitude columns into an interactive map for free. Drop the file in, see every row as a point, then style and share it.
GeoTIFF viewer
View GeoTIFF (.tif) images, drone photos and satellite imagery on a map online for free. Drop the file in and it lands in the right place. No install needed.
GPX viewer
Open GPX files from your GPS, watch or fitness app and see the tracks, routes and waypoints on a map. Free, private and in your browser.
GeoPackage viewer
Open GeoPackage (.gpkg) files online for free, no QGIS needed. See the layers on a map, browse the data table and export it. Runs in your browser.
File Geodatabase viewer
Open an Esri File Geodatabase (.gdb) online for free, no ArcGIS licence needed. Zip the .gdb folder, drop it on the map, and browse its layers and data.
Convert a file
Shapefile to GeoJSON
Convert a shapefile (.shp) to GeoJSON for free in your browser. See it on a map first to check it, then download the GeoJSON. No upload, no signup.
Shapefile to KML
Convert a zipped shapefile to KML for Google Earth, free in your browser. Check it on the map, then download the KML. No upload, no signup.
KML to shapefile
Convert KML or KMZ files from Google Earth to a shapefile for free, right in your browser. Check it on the map, then download a zipped shapefile. No signup.
KML to GeoJSON
Convert KML or KMZ files to GeoJSON for free in your browser. See the places, paths and areas on a map, then download GeoJSON. No upload, no signup.
GeoJSON to shapefile
Convert a GeoJSON file to a zipped shapefile for free, right in your browser. Check it on the map first, then download. No upload, no signup.
GeoJSON to KML
Convert GeoJSON to KML for Google Earth, free in your browser. See it on a map first, then download the KML. No upload, no signup.
CSV to KML
Turn a CSV of latitude and longitude points into a KML for Google Earth, free in your browser. Check the points on a map, then download. No signup.
CSV to shapefile
Convert a CSV of latitude and longitude points to a zipped point shapefile, free in your browser. Check the points on a map, then download. No signup.
GPX to KML
Convert GPX tracks, routes and waypoints to KML for Google Earth, free in your browser. See them on a map first, then download. No signup.
KML to CSV
Convert KML or KMZ to a CSV spreadsheet you can open in Excel or Google Sheets, free in your browser. Check it on a map first. No signup.
GeoPackage to shapefile
Convert a GeoPackage (.gpkg) layer to a zipped shapefile, free in your browser. Check it on the map first, then download. No QGIS needed.
File Geodatabase to shapefile
Convert an Esri File Geodatabase (.gdb) to shapefiles for free in your browser, no ArcGIS licence needed. Check each layer on the map, then download.
Map functions
Buffer, clip, merge and more. Drop your files on a tool’s page and DropMaps opens with the tool ready and your layers picked. Set the options, click Run, and save the result.
Buffer
Draw a buffer zone around points, lines or areas at a set distance in metres, free in your browser. Works with shapefiles, KML, GeoJSON and more. No signup.
Dissolve
Dissolve polygons into one shape, or merge them by a shared value like region or owner, free in your browser. Works with shapefiles, KML, GeoJSON and more.
Merge layers
Merge two map files into one layer, free in your browser: shapefiles, KML, GeoJSON, GeoPackage and more. Each feature keeps its own data. No signup.
Clip
Cut map data down to an area, like roads inside a council boundary, free in your browser. Works with shapefiles, KML, GeoJSON and more. No signup.
Erase
Remove the parts of your map data that fall inside an area, like cutting out a protected zone, free in your browser. Works with shapefiles, KML, GeoJSON and more.
Simplify
Simplify detailed lines and shapes to make map files smaller and faster, free in your browser. Works with shapefiles, KML, GeoJSON and more. No signup.
Centroids
Turn areas or lines into a single point each, at their centre, free in your browser. Works with shapefiles, KML, GeoJSON and more. Each point keeps its data.
Count points in polygons
Count how many points fall inside each area, like incidents per suburb or trees per park, free in your browser. Works with shapefiles, KML, GeoJSON and CSV.
Join by location
Copy details from one map layer onto another based on where they are, like tagging each property with its zone, free in your browser. No GIS software needed.
Fix geometry
Repair broken shapes, like self-intersections and bad rings, that make other tools fail, free in your browser. Works with shapefiles, KML, GeoJSON and more.
Other tools
Free apps you download, for when you need more than the browser — big rasters and QGIS.
DropMaps Tile Converter
A small, free desktop app that prepares big rasters and tile archives for DropMaps — converting GeoTIFF and MBTiles into Cloud-Optimized GeoTIFF (COG) and PMTiles, and point clouds into 3D Tiles, right on your own machine.
Convert MBTiles & more
Repackage MBTiles and other tile sources into PMTiles or COG — the formats DropMaps can back up to the cloud and stream to your other devices.
Point clouds & 3D Tiles
Tile LAS/LAZ point clouds — in any coordinate system — into a 3D Tiles archive (.3tz), or pack an existing 3D Tiles tileset into one, ready to drop into DropMaps.
Runs on your machine
Everything converts locally on your computer — no upload, no file-size ceiling. Handles multi-gigabyte rasters the in-browser tools can’t.
Download the Tile Converter v0.3.4
Free · no account needed · works offline once installed.
The builds aren’t code-signed yet, so Windows SmartScreen and macOS Gatekeeper may warn on first run — choose “More info ▸ Run anyway” (Windows) or right-click ▸ Open (macOS). Code-signing certificates carry a steep recurring cost that’s hard to justify for a free tool at this stage; once there’s enough interest in DropMaps to warrant it, we’ll get the apps signed so the warnings go away. The download itself is safe in the meantime. See the Tile Converter guide for what it does and how to use it.
What’s new in v0.3.4
10 October 2026- Point clouds in feet (e.g. US State Plane) now convert with correct heights — previously they came out 3.28× too high.
- Converted point clouds load to full detail in DropMaps instead of stalling at the coarse preview.
DropMaps QGIS plugin
Bring DropMaps data into QGIS and push your QGIS work back out. Move maps across as portable
.dmap files, or sign in and sync your cloud layers directly.
Import & export .dmap
Open a DropMaps map (.dmap) as native QGIS layers, or save selected QGIS layers to a .dmap the web app opens in one click.
Browse & sync the cloud
Sign in with your DropMaps account to download your cloud layers and maps straight into QGIS — and push QGIS vector layers back up.
Round-trip your styling
Layer symbology maps between DropMaps and QGIS renderers, and everything is reprojected to EPSG:4326 on the way out.
Download the plugin v1.0.6
Free · works with QGIS 3.22+ · cloud sync needs a DropMaps account (Pro for upload).
Install it in QGIS via Plugins ▸ Manage and Install Plugins ▸ Install from ZIP,
choose the downloaded file, then enable DropMaps under Installed.
Reading/writing .dmap files needs the pyarrow Python package — the plugin
offers to install it on first use. Publishing to the QGIS Plugin Repository is on the way; see the
QGIS plugin guide for details.
What’s new in v1.0.6
24 September 2026- Downloads include your latest edits from the web app, not just the last full save.
- Your own maps download with their layer names, styles and original CRS.
- Clearer messages for unverified emails and lapsed plans.
See what else DropMaps can do
It’s a full map maker in your browser — colour and label your data, draw and edit shapes, measure, stack files on top of each other, and share a map with a link anyone can open.
Explore the features