In the PDF Optimizer, go to the Images section, and change the encoding to JPEG. In Acrobat X Pro, choose File > Save As > Optimized PDF. In Acrobat 9 Pro, choose Advanced > PDF Optimizer. If you don’t have the original files, you can also use the PDF Optimizer tool in Acrobat. When you chose to change your version compatibility (using PDF Optimizer or Reduce File Size in Acrobat) that option was chosenįrom what I’ve learned so far, there are two solutions: You can go back to InDesign or Photoshop, and change your settings, and recreate the PDF.When you chose the Smallest File Size PDF preset in InDesign (or other applications in the Creative Suite), you chose that encoding for images.You chose to export JPEG 2000 out of Photoshop.Images could be JPEG 2000 for several reasons. David Blatner did a presentation on “PDF for the iPad and Tablet” and in it he revealed that JPEG images don’t work if you’ve chosen those following the JPEG 2000 standard. Later, at the conference I found out why.
