Quickly mark UI elements
- When snipping, check Rectangle/Ellipse, or check the Fill mode of Marker pen/Mosaic/Gaussian blur. Then press Right click to auto mark the underlying UI elements.
- Requires “Auto detect UI elements” be enabled

Change the translucency of the drawing pen
Click the bigger color icon in the toolbar. Change the value of “Alpha channel” (0-255, 0 for transparent and 255 for opaque).

Snap the image window to other images or other windows
- Hold Shift before you drag and move the image window. Then release the mouse when their borders are about to align.

Shifted shapes
- Before drawing a rectangle/ellipse, hold Shift and then you can draw a square/circle
- Every shape could be toggled into anther shape by holding Shift
- Rectangle -> Square
- Ellipse -> Circle
- Line strip -> Horizontal / Orthoganal / 45 degrees
- Pencil -> Make straight lines halfway
- Marker pen -> Horizontal / Orthoganal / 45 degrees
- Mosaic/Gaussian blur/Eraser -> (Same as Pencil/Rectangle)
Move the snipping area while you are dragging to adjust its size
- Keep holding the mouse button, then hold Space to move the area
