About MapExp
This is a program that will draw minimaps (with a few options) without resizing a full imagebuffer of the entire map or anything of the likes.
Other than to calculate buffer and data indeces, this uses no algorithms or fancy math to determine minimap colors at all.
It is based on a simple pattern I found in the tiles to determine minimap colors, and I have isolated that data.
Now writes output as PNG!

LargeMap
When compiled with the LargeMap definition, it will read LargeData.dat instead of TileData.dat and have 4 times the buffer space for drawing much larger previews.
Enable LargeMap

Dynamic sizing chart:
Map Size Image Size
Normal
64×64 128×128
96×96 96×96
128×128 128×128
192×192 96×96
256×256 128×128
Icon
64×64 32×32
96×96 24×24
128×128 32×32
192×192 24×24
256×256 32×32
Half
64×64 64×64
96×96 48×48
128×128 64×64
192×192 48×48
256×256 64×64

Upload Map
File:
Max Filesize: 5 MB
Map Draw Size:
Unit Drawing:
Print Settings:
Debug: