easy image format to write loader for?

I've been going through some image format possibilities for my game and I can't decide on a commonly-used image format for my game's data.

Targa is a tried-and-true format but it has a lot of different standard-supported options of storing pixels such that I'd have to write like 8 or 9 functions to load and translate all the different ways a .TGA file's image can be stored.  Not fun.

.jpg and .png are a pain in the butt, even more mathematically annoying with their use of compression and all.  .gif is just not an option.

Buh buh buh... are there no super-simple image formats out there whose header specifications just look like this:

int width
int height
and then an array of guaranteed 24-bit {a,r,g,b} quadruples

Libraries here, libraries there, libraries libraries everywhere.

Free cookie goes out to the first person who can guess correctly why keeping library dependencies to a minimum is a good thing, both in terms of practicality in developing your project as well as in terms of maintaining it.