Replace an image in a PDF right from within Acrobat
With the PitStop Pro plugin you can insert, change, and remove images in a PDF; once again removing the need for the image creators to get involved.
When replacing an image in a PDF, PitStop Pro can take over the preferences of the image that's being replaced.
Low resolution image detection
PitStop Pro can also spot low resolution images, and alert you to the need to replace them with high res versions prior to output.