PDF (adobe.com)

View transparency in artwork

It’s important to be aware of when you’re using transparency, because you need to set some extra options when printing and saving transparent artwork. To view transparency in your artwork, display a checkered background grid to identify transparent areas of your artwork.

  1. Choose View > Show Transparency Grid.
  2. (Optional) Choose File > Document Setup, and set transparency grid options.
    Note: You can also change the artboard color to simulate what your artwork will look like if printed on colored paper.