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Create a selection based on opaque areas of objects

With a bitmap object selected, you can create a pixel selection based on the opacity of any object or mask in the Layers panel.

  1. Select a bitmap object on the canvas.

  2. In the Layers panel, position the pointer over the thumbnail of the object you want to use to create the pixel selection.

  3. Hold down Alt (Windows) or Option (Mac OS).

    The pointer changes to indicate you are about to select the alpha channel (the opaque area) of the object.

  4. Click the thumbnail.

    A new pixel selection is created on the selected bitmap.

  5. (Optional) To add to the selection, Alt-Shift-click (Windows) or Option-Shift-click (Mac OS) another object in the Layers panel.

    To subtract from the selection, Ctrl-Shift-click objects.