how to use a blp for minimap preview?

[Storyyeller]

Currently, I'm using a tga for the minimap preview, and it works great. I thought I could save a bit of space by changing it to a blp, but I can't figure out how.
When I delete the tga and replace it with the blp version, it only shows a small overhead picture of the map, not the preview like it is supposed to.
Yes, I made sure the path was war3mapPreview.blp

What am I doing wrong? Am I just stuck with the tga?

 

[Pharaoh_]

I think that only *.tga type is required, else, i would have seen *.blp as well.
Maybe try to reduce the resolution of the image?
I don't think there is another way.

 

[bounty hunter2]

Sorry, only tga. 128x128 or 256x256.

 

[Storyyeller]

So the people here talking about using blps are just confused or misinformed? I guess the topic is solved then.