For bulk insertion of images into a given location, see: https://www.msofficeforums.com/word-...html#post47919

For the insertion of images at random selected locations, it is certainly quite possible to have a macro format them all the same. See, for example:
https://www.msofficeforums.com/word-...tml#post140329
Although that macro only reformats a single, selected, image, one could be written to reformat all images in a document. That said, you should seriously consider re-sizing the images to the equivalent of 300-360ppi/dpi at the final size before inserting them; otherwise you'll merely end up with serious file bloat.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]