In graphic design and commercial printing, FPO is an acronym that stands for Position Only or Placement Only. An image marked FPO is a temporary low-resolution illustration in its final location and size on camera-ready artwork to indicate where an actual high-resolution image will be placed on the final film or plate.
FPO images are often used when you have been given actual photographic prints or other artwork to scan or photograph for inclusion. With modern publishing software and digital photography, FPO is a term that is largely historical in nature; it is rarely used in everyday practice.
Before the days of fast processors, FPO images were used during the design stages of a document to speed up the process of working with the files during different drafts of a document. Processors are much faster now than they used to be, so slowdowns are minimal, even with high-resolution images. This is one reason why FPO is not widely used.
FPO was usually stamped on an image to prevent accidental printing of a low resolution image or an image that the publisher did not own. Images that were not to be printed were usually labeled with a large FPO over each one so that there was no confusion as to whether they were to be used.