Removes OPI (Open Prepress Interface) information from a PDF.
OPI images are treated special as they are assumed to be preview images. They will for example not be preflighted as other images would be. If you don't use OPI in your workflow, run this Action to remove irrelevant OPI information and get correct editing and preflighting of documents.
OPI (Open Prepress Interfaces) replaces high resolution images with "preview" images; low resolution substitutes which are stored in the PDF, together with the path to the high resolution images. This facilitates data storage and data transfer of PDFs with a large number of images.