User blog comment:Triple-One/Help?/@comment-15225862-20131214210555

When you save a picture with FireAlpaca, asuming you have a PC, you can probably write ".png" or ".jpg" at the end of the file name. Or there's a drop-down box which allows you to pick what file you want to save it as. With a mac, I know for sure there's a dropdown box (since that's the one I have).

I don't have PaintTool SAI, so sorry I don't know there