SLADE's resource manager displays a simple map preview. It is possible to export a similar image to disk, by clicking on the "Save Map Image" button. Using it will prompt you for a file name, with a default suggestion built from the archive's name and the map slot.

This display can be customized. Colors can be changed from Preferences->Interface->Colours & Theme, in the "Map Image Export" section.

Image width and line thickness can be changed from Preferences->Advanced.

The values map_image_height and map_image_width correspond to the size of the image. If these values are negative, they will be used to scale the image's size depending on map size (the lower the value, the smaller). With -1, one map unit will be represented by one pixel.

The value map_image_thickness correspond to the thickness of the drawn lines.