In a nutshell,
Images are suitable for game sprites. They allow for realtime rotation, flipping, scaling, alpha, and various blend modes. They are hardware accellerated.
Pixmaps are sutiable for static backgrounds (loading screens) and pixel manipulation (via ReadPixel/WritePixel). They reside in the system memory and therefore not suitable as game sprites. However, they can be saved via SavePixmapPNG.
Images are suitable for game sprites. They allow for realtime rotation, flipping, scaling, alpha, and various blend modes. They are hardware accellerated.
Pixmaps are sutiable for static backgrounds (loading screens) and pixel manipulation (via ReadPixel/WritePixel). They reside in the system memory and therefore not suitable as game sprites. However, they can be saved via SavePixmapPNG.