Opening a .png file using Paint.NET gives me the units which are set (by default) in Paint.NET, and it knows how to convert the resolution stored in the .png. If I change a setting, like Image/Resize, to be pixels/cm instead of the default pixels/inch, the next time it has remembered my choice. I like that behavior.
... I have Paint.net but I don't use it much. IMO
its main function is to alter or edit the entire image... not just specific areas in the image
. (I guess that's why there's no point-to-point selection tool?)
It also seems to be more of a 'playground' for other user/programmers because there's a TON of plugins... and about 99% are effects.
Using PSP I can change a PNG image from ppcm to ppi too... and it remembers my setting... but only
if I Save AS
and change the format to anything but PNG. This is the extra step I was trying to avoid... and what started this topic...
There's a screencap function as well, but you have to launch PSP and keep it running, to use it.
That's why I fell in love with SC
. Just click the icon and your ready to go!