Hotkeys shortlist

Global hotkeys

right mouse clickon existing annotation - (click on an object) bring up classes pop-up menu to change assigned label class
ctrl / cmd + z- undo action
cmd + shift + z- redo action
shift + d- set image status to "Done"
ctrl + shift + d- set image status to "Done" and go to the next unlabelled image
shift + r- set image status to "To review"
shift + q- set image status to "skipped"
shift + t- select next annotation when another annotation is selected
t- select next annotation
l- select the last created annotation (when not creating another object/polygon/mask)

+ or scroll down on mouse or expand fingers on touchpad- zoom in
- or scroll up on mouse or pinch on touchpad- zoom out
press and hold spacebar + move mouse or ↓ / ↑ / → / ←- pan image in the chosen direction
shift + 1- zoom to original size (100%)
shift + 0- zoom to fit the image to the screen
shift + n- next image
shift + b- previous image
d- hide all annotations on an image as long as the key is pressed
v- increase the opacity of all annotations to 100% as long as the key is pressed
z- show label classes on top of annotations as long as the key is pressed

shift + left mouse click- select multiple objects/points (including marquee tool to drag large selection(s))
cmd / ctrl + a- select all labels
backspace / delete / fn + delete- delete label(s)/point(s)
cmd / ctrl + c- copy label(s)
cmd / ctrl + v- paste label(s)
cmd / ctrl + x- cut label(s)
cmd / ctrl + d- duplicate label(s)
↓ / ↑ / → / ←- (when annotation(s) are selected) move annotation(s)
↓ / ↑ / → / ←- (when label vertex/point(s) selected) move point(s)
alt + ↓ / ↑ / → / ←- move label/point a smaller distance
shift + ↓ / ↑ / → / ←- move label/point a larger distance
y- change label class to the next label class in the list
shift + y- change label class to the previous label class in the list
shift + o- send object(s) to the front
shift + u- send object(s) to the back
shift + c- converts polygon(s) to mask(s) or vice versa

a- place the first corner of a bounding box/place second corner of a bounding box (completing box)
enter- complete bounding box
esc- cancel current bounding box/exit tool to Move/Edit if none in progress