I am having a problem with Optimizer and with Save As Reduced File Size on documents that I scanned on my HP All-in-One Scanner. I open the document and use the Save As dialogue and nothing happens - it stays the same size. I'm using Acrobat X 10.1.4. Any ideas??
These functions aren't magic - they can only reduce when there is some slack to cut out. Maybe the scanner is doing a good job.
Is the file size exactly the same, to the number of bytes? Does the modification date change?
How about if you fiddle with image settings?