Terraria Map Viewer

Basically, copy the your world into the same folder as the TerrariaMapper.exe and then drag the world onto the exe, you'll see a console window appear and it should generate your pic in the same folder.

well i copied the map in the same folder , it says saving image and when its done nothing appears in the folder ...

Instead of copying the world file, try just putting the mapper files (TerrariaMapper.exe and libpng15.dll) directly into your Worlds folder. Then drag and drop the world file onto the exe. I doubt it would actually make a difference but it worked fine for me.

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Very helpful tool by the way. Nice job.