Use the third party add-on Mapview developed by Jacques Deyrieux to easily download tiles to cover an area of any size (subject to your system's limitations).
Download Mapviewarrow-up-right from Tacview's website.
Run Mapview.exe
Mapview.exe
Choose from the predefined maps:
Or add your own by clicking on the pencil icon and filling out a Name and the Top Left and Bottom Right coordinates of the area you wish to cover.
Choose the source from which you wish to download the tiles: Skyvector, OpenStreetMap, Thunderforest, or OpenFlightMaps.
For Thunderforest, follow the instructions in the pop-up message:
And choose a Style:
Choose a Blending Mode and a Quality level, and click Go!
Wait for the tiles to be downloaded:
Click on the folder icon in the bottom left to confirm that the tiles have been downloaded to the correct folder.
Close and relaunch Tacview to see the textures:
Last updated 20 days ago