All Keyboard and Mouse Shortcuts

Shortcuts in parentheses are applicable to the macOS operating system.

All Labeling Editors

ShortcutActionDescription

Click on object

Select object

Enter

Submit/Save

Right Click

Open selected object context menu

Ctrl + A (⌘ + A)

Select all objects

Ctrl + Z (⌘ + Z)

Undo

Ctrl + Shift + Z (⌘ + Shift + Z)

Redo

Del (fn + ⌫)

Delete selected object

H

Hide selected object

Shift + H

Show/hide all annotations (except in the NIFTI/NRRD labeling editor)

Alt + Tool Shortcut (⌥ + Tool Shortcut)

Change category of selected object

Click on an object to select it, for example a bounding box. Press Alt + the shortcut of another class in your project sharing the same type as the selected object (e.g. another bounding box). The selected bounding box will change its category.

P

Copy ID of selected object

Esc (when a tool is selected)

Deselect current tool

Up/Down Arrows

Navigate between annotations

You can navigate through annotations with this shortcut, each time selecting a different one.

Shift + Up/Down

Navigate between annotations, focusing on selected annotation

This is the same as the shortcut above, except in PDFs, you will jump (focus) to the location of the selected annotation.

N

Complete single relation/group relation

S

Save

D

Add description to object

This is the same as right-clicking on an annotation and clicking on "Update Description".

I (capital i)

Open issue on task or object

If an object is selected, pressing "i" will open an object-level issue. If no object is selected, the issue will be opened on the task in general.

Image Labeling Editor

ShortcutActionDescription

Shift + Up/Down

Navigate between annotations, focusing on selected annotation

This is the same as the shortcut above, except in PDFs, you will jump (focus) to the location of the selected annotation.

Scroll Wheel

Zoom In/Out

Space + Left Mouse Button

Pan the asset while a tool is selected

N

Complete polygon/segmentation/polyline

Right Mouse Button (while editing a polygon)

Remove the last point

Ctrl + Right Mouse Button (⌃ + Right Mouse Button)

Remove Existing Polygon Point

Hover over a point of an existing polygon, and use the shortcut. This will delete the point.

Ctrl + Left Mouse Button (⌃ + Left Mouse Button)

Add point to existing polygon

Same as above, except it adds a point instead of removing it. You need to be hovering over an existing polygon point for the shortcut to activate.

Ctrl + Hover on Object List Item (in Object panel)

Jump to annotation

In PDFs, hold Ctrl (⌃) and hover with your mouse cursor over the list of objects in the Objects panel at the bottom right. Hub will jump to the annotation being hovered.

C/Z

Move back/forward one frame or image

In multi-frame TIFFs or multi-image assets.

O

Switch image.

In multi-image single-page assets.

Video Labeling Editor

ShortcutActionDescription

T

Stop interpolation

In videos, it stops interpolation of the selected object. It disables it in such a way that it will not be visible from the current frame onward.

Scroll Wheel

Zoom In/Out

Z/C

Move back/forward one frame

Shift + Z / Shift + C

Move to the first/last frame in the video

Audio Labeling Editor

ShortcutActionDescription

<- / ->

Move playhead backwards/forwards 5 seconds.

PDF Labeling Editor

ShortcutActionDescription

Shift + Up/Down

Navigate between annotations, focusing on selected annotation

This is the same as the shortcut above, except in PDFs, you will jump (focus) to the location of the selected annotation.

Ctrl + Hover on Object List Item (in Object panel)

Jump to annotation

In PDFs, hold Ctrl (⌃) and hover with your mouse cursor over the list of objects in the Objects panel at the bottom right. Hub will jump to the annotation being hovered.

Scroll Wheel

Scroll Document Up/Down

Medical Labeling Editor

ConditionShortcutActionDescription

Always

Space + Drag Cursor

Pan

Pans the view.

Always

Ctrl + Mouse Wheel

Zoom

Zooms the view being currently hovered by the mouse cursor.

Always

Shift + Move Cursor

Multiplanar Translation

Navigates between slices in all other views to show the pixel you are hovering over in all views.

Always

Ctrl + Z

Undo

Undo the last action.

Always

Ctrl + Shift + Z

Redo

Redo the last undone action.

Always

Mouse Wheel

Navigate Slices

Move up and down between slices.

Always

Middle Mouse Button

Pan

Pans the view.

When no labeling tools are selected

Click and Drag

Pan

Pans the view.

When no labeling tools are selected

Double Click

Full Screen

Switch between four-view and single-view modes.

When a labeling tool is selected

Shift + Mouse Wheel

Change Tool Size

Changes the size of the tool.

When a labeling tool is selected

W and Q

Change Tool

Move up and down in the tool list, changing the currently active tool.

When the "Window" icon is selected

Drag cursor up/down

Change Brightness

Dragging the cursor downwards will increase the brightness, dragging it upwards will decrease it.

When the "Window" icon is selected

Drag cursor left/right

Change Contrast

Moving the cursor to the left while holding Ctrl will increase contrast, moving it to the right will decrease it.

When the "Pen" tool is selected

N

Close Pen Trace

Closes the loop drawn with the pen and paints the pixels found inside it.

Always

C/Z

Navigate Between Frames

Moves back/forwards one frame.

Always

E

Switch to Eraser

Always

Q

Switch to Brush

Always

P

Switch to Pen

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