Control selection dimming.

Use the Selection Box dim-opacity slider to make the active region easier to distinguish from the rest of the screen.

On this page

Set how dark the unselected screen appears

Open Settings, expand Selection Box, and use Dim opacity. The slider accepts values from 0% to 100% and controls how dark the rest of the screen appears while you draw a selection.

A lower value leaves more of the surrounding screen visible. A higher value increases the contrast between the active selection and the area outside it.

Use the setting with manual selection

1
Open a mode
Press the shortcut for an enabled answer mode.
2
Draw a region
Drag across the screen to open the manual selection surface.
3
Read the contrast
Use the dimmed area to distinguish the region you are selecting.
4
Confirm or cancel
Confirm the region when it is ready, or press Escape to cancel.

Why the control can be unavailable

When Automatic Screen Capture is enabled, LowLighter uses the saved region instead of opening the normal manual selector. Selection styling controls, including Dim opacity, are shown as unavailable until Automatic Screen Capture is turned off.

Need to change the dimming? Disable Automatic Screen Capture, adjust Selection Box, then use the manual selection workflow again.