I have a pdf I created. I'm trying to reduce the file size... something I do quite often (by just going to Document > Reduce File Size). However, in this instance, I'm getting the following message: "This PDF file contains attachments. PDF Optimizer will not process the attachments. You'll need to open each attachment and run this command to process all files."
I did not attach anything to the document, so it must mean something that I'm not understanding. I created the file using QuarkXPress 7. I just imported images (vector mostly, but a few bitmapped images). I have never had this issue before, so I'm not sure what to do about it. Oh... and if I just hit "OK" it does reduce the size slightly... from 7 mb to 6.7. Normally it will go down to less than 1 mb.
PS I'm using Acrobat 9 Professional
You can attach other files to your pdf. Good for bundling related files together. To attach a file choose Document > Attach a file...
To see if your PDF does indeed have attachments, click the paper clip symbol at bottom right of application window. A list will pop up. Highlight and delete any unwanted attachments.
It is not uncommon for settings files to get saved as an attachment. If this happened you can easily delete the attachment with no consequence. I assume the purpose of attaching the settings file is for people to be able to determine the settings used to create the pdf.