Pixel editor

Icon	Tool	Function
	Brush (X)	Makes small changes to an annotation or when the image quality is so low that the segmentation tool does not work.
	Box tool (M)	Creates annotations in the shape of a square or a rectangle.
	Ellipse (J)	Creates annotations in the shape of a circle or an oval.
	Polygon (Z)	Creates geometric annotations by connecting the points with lines.
	Eraser brush (Shift+X)	Edits instances using the brush tool.
	Eraser polygon (Shift+Z)	Edits instances using the polygon tool.
	Eraser box (Shift+M)	Edits instances using the box tool.
	Eraser ellipse (Shift+J)	Edits instances using the ellipse tool.
	Select (V)	Selects, moves, and changes the shape of objects.
	Eyedropper (I) and Bucket (B)	Assign a class to an object quickly.
	Drag (middle mouse button)	Helps you navigate the canvas.
	Tag (Alt+T)	Classifies images. Select Tag, enter a word and select Save.
	Comment (C)	Adds comments to your annotations. Select Comment, click an object, and enter a comment.
	Class selection	Assigns a class to an object before annotating it.
	Right arrow (3)	Goes to the next workflow.
	Left arrow (2)	Goes to the previous workflow.
	Zoom in (scroll up)	Zooms in the canvas.
	Zoom out (scroll down)	Zooms out the canvas.
	QA mode (Ctrl+Q)	Shows you to which class each object belongs. Select QA and hover over the objects to see to which class they belong to.
	Semantic/instance segmentation mode (Shift+S	When activated, you can perform instance segmentation. When it's disabled, you can perform semantic segmentation.
	Overwrite mode (O)	When activated, you can add instances sover annotated areas.
	Shortcut keys (Ctrl+K)	Shows you all the keyboard and mouse shortcuts.

Vector editor

Icon	Tool	Function
	Select object (V)	Selects, moves, and changes the shape of objects.
	Points (P)	Creates points on your image.
	Polyline (L)	Creates annotations in the shape of lines.
	Polygon (Z)	Creates geometric annotations by connecting the points with lines.
	Bounding box (X)	Creates annotations in the shape of boxes.
	Ellipse (E)	Creates annotations in the shape of ellipses.
	Cuboid (Q)	Creates annotations in the shape of 3D boxes.
	Template (T)	Applies a custom vector template.
	Ruler (K)	Serves as a guideline while annotating objects.
	Comment (C)	Adds comments to your annotations. Select Comment, click an object, and enter a comment.
	Eyedropper (I) and Bucket (B)	Assign a class to an object quickly.
	Drag (Middle mouse button)	Helps you navigate the canvas.
	Tag (Alt+T)	Classifies images. Select Tag, enter a word and select Save.
	Class selection	Assigns a class to an object before annotating it.
	Right arrow (3)	Goes to the next workflow.
	Left arrow (2)	Goes to the previous workflow.
	Zoom in (Scroll up)	Zooms in the canvas.
	Zoom out (Scroll down)	Zooms out the canvas.
	QA mode (Ctrl+Q)	Shows you to which class each object belongs. Select QA and hover over the objects to see to which class they belong to.
	Shortcut keys (Ctrl+K)	Shows you all the keyboard and mouse shortcuts.

Top panel

Icon	Tool	Function
	Undo (Ctrl+Z)	Reverses an action.
	Redo (Ctrl+Shift+Z)	Redoes an action you’ve undone.
	Duplicate (Ctrl+D)	Duplicates objects.
	Show/Hide objects (R)	Shows or hides annotated objects.
	Show/Hide labels	Shows and hides labels.
	Show/Hide comments	Shows or hides comments.
	Add instructions link	Shows the instructions link.
	Add instructions file	Shows the instructions file.
	Group (Ctrl+G)	Groups selected objects.
	Ungroup (Ctrl+Shift+G)	Ungroups selected objects.

Right panel

Class

Icon	Tool	Function
	Group visibility	Shows the group’s instances on the image.
	Reset class	Assigns the class to an empty category.
	Select/Deselect group	Selects and deselects the group.
	Delete class	Deletes the class.

Instance

Icon	Tool	Function
	Revert (Ctrl+Shift+R)	Deletes all annotations.
	Expand/Collapse instances	Expands and collapses all the instances.
	Instance visibility	Shows the group’s instances on the image.
	Select/Deselect instance	Selects and deselects the instance.
	Remove	Deletes the instance.
	Disapprove	Disapprove an instance.
	Approve	Approve an instance.