Illustrator

Transparency panel overview

You use the Transparency panel (Window > Transparency) to specify the opacity and blending mode of objects, to create opacity masks, or to knock out a portion of one object with the overlying portion of a transparent object.

Show all options in the Transparency panel

  Choose Show Options from the panel menu.

Show a thumbnail of the selected object in the Transparency panel

 Choose Show Thumbnail from the panel menu. Or, click the double triangle on the panel’s tab to cycle through the display sizes.