Does someone know if Codea supports only png or also other type of images? And if yes which one and how can them be loaded?
You can load images from your ‘Documents’ or ‘Dropbox’ sprite packs using the readImage() function - see in the in-app reference under ‘Storage’.
Experimenting, I think this also works with .jpg files (but only with that extension), but not with .bmp or .gif format image files.