Irrlicht Engine

So, I have this little issue where I need to, as the title says, write a string to an IImage, but I can't seem to find a method for doing that. Is there a way, or if not, are there any pointers to write such a method?

Yeah, it's a really neat thing Google made. Anyway, I got it to work, thank you very much, all!

Sorry, filesize. PNG is good, but I was really hoping I could implement WebP, since bandwidth is finite and expensive. Is there a guide that would help me edit Irrlicht to allow WebP textures?

The textures almost always are just straight drawing of the pictures, though, and usually no more than 30 or so at a time. I wanted to use WebP to help with server issues, but do you suppose the compressed textures would work better?

Sorry to bug anyone reading this, but I seem to be stuck. A project I'm working on uses a ton of images (about 615 MB), so I was looking into the WebP image format, which should reduce the size by a lot. Problem is, Irrlicht doesn't want to work with it, and I can't seem to figure out how to extend ...