PDF Optimizer

User Data

Optional. Enable any of these values by adding it to the profile and setting it equal to ON.

discard-comments-forms-multimedia Removes changes added to the PDF document, such as comments from a reviewer or completed forms fields.
discard-document-information-and-metadata Removes document descriptions and metadata
discard-file-attachments Removes files attached to the document
discard-private-data Removes piece data relevant to the application that created the file. Some applications, like Adobe Illustrator, add their own unique values to a PDF document when generating that document.  These values are useful to the original software product if the PDF is opened and edited in that product again.  But these values can also be removed.