[gdal-dev] MBTiles generation docs question

[Evert Etienne (SITEMARK)]

Thank you Jukka for the links.

As I’ve commented on the github ticket and stackoverflow post, you helped me to find a workaround. 
Is there any tool available that can change a 3857 geotiff to the resolution needed for a specific zoom level at the location of the geotiff (I am having a hard time figuring out how this would work exactly due to the 3857 projection changing sizes)

Many thanks