Yep, you guessed it, it's an app that creates music for your programmable door-bell!

But seriously, it's a simple Win32 app for taking a number of image formats, allowing a preview of the selected format, then saving to raw in a combination of RGB or BGR with 15bit, 16(5:6:5)bit, or 16(5:5:5:1)bit.
Nice and easy, and gives you information about the image when its loaded.

Eventually I wish to have command-line options where a simple drag and drop (so, only the filename is passed) results in a default of RGB 16(5:5:5:1)bit format RAW output in the same directory. Makes converting images that one bit easier than using gfx2Gba then fixbit16!

Watch the news for a post about it.

[EDIT]
Just as a side-note, I haven't yet finished the sprite font class, as I was having trouble with my images in RAW format, hence this mini-project was born.
For whatever reason, fixbit16 didn't work, and instead of pinning over it, I am just replacing it (if only all aspects of life were that easy!)
[/EDIT]