This is tool for myself, but i'm sharing it here in case it can be of use to others. Unfortunately, I am a dumb-dumb, so if it doesn't work for you, no guarantees that i can provide support for it. I use Windows 7.
All that this does is resize a bunch of PNGs to 2x their original size in a single click.
So pretty much it has two main uses:
- showing off pixelwork that's too small
- converting 16x16 tilesets to 32x32 for use in the rpgmaker editor

I know there aren't many people needing a tool like this. Either they aren't making 16x16 tiles, or they've already got an action/batch set up for photoshop/gimp/whatever. However, if you do try this tool, please let me know whether or not it works for you. I would be very grateful.
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