Sometimes I copy an image from one place to my clipboard. In the MS-Word system, riught-mouse-click-Copy, or Ctrl-C.
Then I can Paste it into many graphics-editing programs like "MS Office Picture Manager" ... or something very different in the Mac world, I'm sure! (I keep one empty bitmap image in one folder just for that purpose.)
Anyway, with MSO-PM, as soon as I paste the image from the clipboard into PM, it creates a new file for me. Then I can use Dave's tools to upload that file.
Since you already have all the images "in" one existing document, you could copy-paste each of them pretty quickly into a series of new files, then upload them into Dave's article-editing software fairly quickly.
And then you would also have each image available separately for other uses.
I can do the same thing with screenshots, which is REALLY handy:
