We have a cool trick for getting those images from a PowerPoint presentation to your Prezentor presentation.
With this method you can extract all images, items and elements in a PPTX to one folder - this is especially useful regarding images which can then be uploaded to the file archive in Prezentor.
Find the folder with the PPTX. NB: A good hint is to make a copy of the PPTX so you still have it after this method.
Rename the file to ".zip".
Rename the file to ".zip" and press yes to change the file. NB: This changed the file and does not make a copy, so be sure to make a copy of the PPTX before you do this.
You now have a zip file of the former PPTX, extract this.
Finnally, go through a few folders, marked by yellow and you have all the images. Now you can upload these to Prezentor and you are ready to build great presentations!
See also: Can I import a PPTX file to Prezentor?