pageDown and pageUp moves to the next and previous image. f (or F11) toggles fullscreen mode. + and - zooms in and out. 1 (or z) shows the image in its actual size. (Scroll the image with the arrow keys). F2 renames the image. S opens a dialog window to resize the image. r and R rotates the image right and left, respectively. ] and [ als rotates the image right and left, yet losslessly if possible and with automatic saving. shift+delete deletes a file.