How to make the area around an image transparent with Paint.net
I've been looking for this one Google all day but nothing shows me how to do this without making a different layer each time which will take forever. Basically, I want to copy some tree sprites I have and copy/paste a ton of them on my map but I have a problem of a colorless boarder keeps cutting off already placed trees. I'd like to make it where I can place trees slightly over trees to make it look like a dense forest but I'm not sure how to keep that colorless boarder from screwing things up.
HELP!
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Posts
Lasso select (from the toolbox) what you want to keep.
In the menu go Edit -> Invert Selection
Hit the delete key
Anything in the checked pattern is transparent
If this goes poorly (I don't have a steady hand), try the Magic Wand selection tool to grab the colorless background -- by default, it grabs everything of the same color as your target that's contiguous. Sort of like a fill select.
Either way, you may have to finish the process by zooming way in and blanking out left-over pixels with the eraser tool.