Portable Basemap Server Download ((better)) -

MapProxy is an open-source proxy for geospatial data. It acts as a middleman. It can take existing map services (like WMS), "slice" them into tiles, and store them locally. Once cached, it serves them locally at lightning speed.

Open your server software of choice (many people use a simple tool called TileServer GL ). Point it to the folder or .mbtiles file you downloaded in Step 2.

just go to http://192.168.1.105:8080 – TileServer GL provides a web viewer.

Clients use http://your-ip:8080/z/x/y.png portable basemap server download

| Source | Format | Download method | |--------|--------|----------------| | (vector) | MBTiles | Use openmaptiles.com → "Download free plan" (requires free account) | | USGS Topo (raster) | GeoPackage / MBTiles | apps.nationalmap.gov/downloader (USA only) | | Satellite (low res) | MBTiles | github.com/opentopomap (global, 200m resolution) | | Custom area (any zoom) | MBTiles | Use QGIS + Generate XYZ Tiles or Mobac (Mobile Atlas Creator) |

You cannot legally redistribute most commercial tile sets. Instead, :

Once you have the file, follow these steps to integrate it into your GIS environment: MapProxy is an open-source proxy for geospatial data

(e.g., phone):

Your laptop is now broadcasting a local URL (e.g., http://localhost:8080 ). You can type this URL into the browser of your tablet, phone, or another laptop connected to the same Wi-Fi, and the map will render perfectly—even if the router isn't connected to the outside world.

Or use with a folder of pre-generated tiles: Once cached, it serves them locally at lightning speed

| Region | Source | Tile Format | |--------|--------|--------------| | Worldwide (low zoom 0–7) | openmaptiles.com (free plan) | MBTiles | | USA Topo | usgs.gov (download as MBTiles) | MBTiles / GeoPackage | | Europe | europa.eu (EU open data portal) | Raster TMS | | Any custom area (high zoom) | Use (mobac.sourceforge.net) → export as MBTiles | MBTiles |

Once you master this setup, you gain a superpower: the ability to visualize the world even when the world is disconnected. Whether you are hiking the backcountry or managing a secure facility, carrying the map in your backpack is the ultimate freedom.