is a notebook option that determines the overall opacity of a displayed window.


  • The settings for WindowOpacity run 0 to 1, with 0 representing perfect transparency.
  • WindowOpacity affects all elements of a window, not just its content area.
  • WindowOpacity may not be available on some computer systems, or with some window environments.


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Basic Examples  (2)

Create a semitransparent notebook:

Modify opacity of the current notebook:

Reset to full opacity:

Neat Examples  (1)

Dynamically change the opacity of the current notebook:

Introduced in 2007