Dear David, That's what I was doing but the files sizes were still much larger than .pdfs containing similar images printed as a pdf from Word and the image quality was terrible. I guess the Illustrator compatibility or some other settings are keeping the file size big? Geoff -----Original Message----- From: SciArt-L Discussion List-for Natural Science Illustration- [mailto:[log in to unmask]] On Behalf Of DAVID W. EHLERT Sent: Monday, 11 August 2008 2:24 AM To: [log in to unmask] Subject: Re: [SCIART] PDF file size Hey Geoff, If you open a high quality PDF in Acrobat, you can then go to ADVANCED> PDF Optimizer. Play with the settings to get what you need in terms of file size. Save the file with a new name, e.g. oldfilename_a.pdf Hope that helps. :) Cheers! Dave On Sat, 9 Aug 2008, Geoff Thompson wrote: > Dear All, > I have been saving PDFs in Illustrator CS3 and Acrobat 8 > Professional. The files sizes are a lot bigger than if I print a similar > file, containing the same images, as an Adobe PDF from Word. I have tried > optimising the files but I lose a lot of quality in photos and the files are > still a lot bigger than if they were made from a different program. My boss > has my old CS creative suite and her version of Acrobat Professional has a > function (I can't remember its name) that reduces file size without losing > noticeable image quality. This is not available in my version and in any > case was greyed out on a file made in Illustrator CS3. > What am I doing wrong and what options do I have to get good quality images > in a smaller file size? > Thanks, > Geoff Thompson >