Prerendered tiles in the style used on osm.ch.
You can download them to either host them yourself, or use them in an offline application.
If you have an application where you can specify the URL for the map tiles, just point
it to where you unpacked the tiles to use them. For an example with
leaflet have a look at the tiles.html packaged with
the tiles. tiles.html can also be used as a very simple viewer for the downloaded tiles.
Last update: 13. 12. 2018