My goal is to run extractor with latest world map from ThinkGeo, worldstreets-2021-03.mbtiles, which is 73GB and generate zoned maps.
The extractor I used in 2020 did not work so I downloaded from https://github.com/ThinkGeo/ThinkGeoOfflineMapsViewerAndExtractor-ForWpf12
It generated maps but the size of them are considerably smaller than those generated use previous extractor. Map for Illinois is only 12MB which used to be 265MB. Map for Nevada is only 4MB but it was 180MB. This result is after the change of maxZoom to 20 from 14. The map for US is only 16MB.
Comparing the code with before, it seems it is copying images over, is it a problem?
Another issue is that extractor used to center on and zoom to the target area after extraction, but this version is not doing that any more.