png2pna
png2pna is a tool created by Pommy, which can quickly create pna files from png files with transparent backgrounds. Many files may be converted at once if desired.
Usage
The user can simply drag and drop the png files onto the exe file (not the program's window, the exe file should not be double clicked), and pna files will be created in the same directory as the pngs.
If pna files of the same name already exist, the program will stop running, leaving behind an extra png file that was partway through the process. The file's name will end in “.pna.png”. This file can be deleted, or renamed to end in just “.pna” and used normally.