?	show help
b	toggle border
a	toggle always on top
p	toggle cursor passthrough
l	lock window position/size
right/left	next/previous file
+shift	next/previous media file
+ctrl	⮡ retain image adjustments
enter	open selected folder
backspace | alt+up	return to parent folder
o	reveal file in explorer
f	flip horizontally
+shift	flip vertically
drag	move window
+ctrl	pan image
right-click	rotate
+shift	⮡ snap-rotate
drag edges	blurry scale image with window
scroll | up/down	pixel scale image with window
+ctrl	pixel scale image
+alt	⮡ zoom from center
+shift	adjust opacity
ctrl+c	copy bitmap
+alt	⮡ copy image data URI
ctrl+v	paste bitmap/url
space	reset image
escape	close
r	reload