Tools › Merge layers

Merge two map files into one — free

Got the same kind of data in two files, like two survey days or two neighbouring areas? Drop both here and DropMaps puts them together into one layer. Then download it as a single file.

1

The first file

Drop a map file here, or

    2

    The file to add to it

    Drop a map file here, or

      Both layers in one file? Just fill box 1 — you can pick the second layer in DropMaps.

      By opening your file you agree to the DropMaps Terms of Service and Privacy Policy.

      ✓ Opened in a new tab

      Your files stay on your computer — they open in your browser, not on our servers.

      Free · No signup · Nothing to install

      What it does

      Before Merge layers, before: Two files: places in the north (blue) and the south (red).
      Two files: places in the north (blue) and the south (red).
      After Merge layers, after: One merged layer holding all of them.
      One merged layer holding all of them.

      How to do it

      1. Any map file works: a zipped shapefile, KML or KMZ, GeoJSON, GeoPackage, GPX, a CSV with coordinates or a zipped .gdb.
      2. Drop the first file into box 1 and the file to add to it into box 2. You can also drop both at once, then use “Swap” if they landed the wrong way round.
      3. Click “Set up Merge”. DropMaps opens in a new tab with your data on the map and the Merge layers tool open, your layers already picked.
      4. Check the two layers are the ones you want, then click Run.
      5. The result appears on the map as a new layer. Click “Save result…” to download it as a shapefile, KML, GeoJSON, GeoPackage or CSV.

      Questions

      What happens to columns that only one file has?

      They are kept. Features from the other file just have that column empty.

      Do the two files need to be the same format?

      No. You can merge a shapefile with a KML, a GeoJSON with a GeoPackage, and so on.

      What if both layers are in one file?

      Drop the file into box 1 only. Once DropMaps opens, pick the second layer from the list in the tool.

      How do I get the result?

      The result appears on the map as a new layer. Click “Save result…” under the Run button and choose a shapefile, KML, GeoJSON, GeoPackage or CSV.

      Is my data uploaded anywhere?

      No. The tool runs inside your browser, on your own computer. Nothing is sent to us unless you choose to save the map to a DropMaps account.

      Other free tools

      Viewers

      Shapefile viewerKML / KMZ viewerGeoJSON viewerCSV to mapGeoTIFF viewerGPX viewerGeoPackage viewerFile Geodatabase viewer

      Converters

      Shapefile to GeoJSONShapefile to KMLKML to shapefileKML to GeoJSONGeoJSON to shapefileGeoJSON to KMLCSV to KMLCSV to shapefileGPX to KMLKML to CSVGeoPackage to shapefileFile Geodatabase to shapefile

      Map functions

      BufferDissolveClipEraseSimplifyCentroidsCount points in polygonsJoin by locationFix geometry

      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.

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