Tiles export

The Tiles export tool allows you to extract a region of the map in a basemap or overlay, and store it in a GeoPackage or MBTiles file. Everything displayed is exported, with the exception of web maps and the M3 background map. The resulting files will have web mercator (EPSG:3857) projection and GoogleMapsCompatible tiling scheme.

Usage

The tool can be started when a basemap or overlay is open, using the button on the top right toolbar. You can drag a bounding box in the map to select the area to export. You can also type geographic coordinates for the extents of the area.

Min/max level

The minimum and maximum zoom levels to fetch tiles from within the selected extent. Remember that for each zoom level increment, the number of tiles are quadrupled.

Tile format

Format for tiles:

• PNG - Lossless format, larger size. Best suited for thematic raster data with few unique colors.
• JPEG - Lossy format, smaller size. Best suited for imagery and maps with shading. Tiles which are partly transparent are saved as PNG.