Is Optimizing worth it?

The PDF “optimization” process is primarily oriented towards reducing PDF file size. In most cases, however, such file size reduction is lossy. You might lose image quality if you change compression type and/or resolution. You might have problems displaying text if you remove embedded fonts. You might lose searchability, editability, and/or the ability to export to other formats if you flatten transparency. The PDF “optimization” should be used with great caution. In general, if you find yourself using this function very often, you should question how (i.e., what options you specify) when you create the PDF files in question.

          - Dov