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For ordinary aerial images we recommend the JPG format with a compression of 85%. If there is a need for true color in your aerial images we recommend using PNG32 as image format.

 

Cadastral data can be cached with small image formats except there is a need for transparencies. In this case PNG32 is recommended.

 

 

Note: Image formats are responsible for the size of a map cache tile. Consider that a PNG32 will take much longer to be displayed as a PNG8 cache tile.

 

Note: Be sure not to change the predefined "Origin (x, y) in map units". A far from map content positioned cache origin is needed an does not mean a generation of many empty tiles outside the defined cache extent.