Image viewer feh
FEH
Keyboard mappings
Note: Up
/Down
/... refer to arrow keys
From the manpage:
⟨keypad +⟩, ⟨Up⟩ [zoom_in]
Zoom in
⟨keypad -⟩, ⟨Down⟩ [zoom_out]
Zoom out
*, ⟨keypad *⟩ [zoom_default]
Zoom to 100%
/, ⟨keypad /⟩ [zoom_fit]
Zoom to fit the window size
! [zoom_fill]
Zoom to fill the window size like --bg-fill
⟨keypad Left⟩, ⟨Ctrl+Left⟩ [scroll_left]
Scroll to the left
⟨keypad Right⟩, ⟨Ctrl+Right⟩ [scroll_right]
Scroll to the right
⟨keypad up⟩, ⟨Ctrl+Up⟩ [scroll_up]
Scroll up
⟨keypad Down⟩, ⟨Ctrl+Down⟩ [scroll_down]
Scroll down. Note that the scroll keys work without anti-aliasing for performance reasons; hit the render key after
scrolling to anti-alias the image.