I have a large and complex Word 365 document containing a large number of full-page images. All the original images have resolutions of over 300ppi. However, I have manually extended the images beyond the page boundaries to achieve the desired size and framing. In every case the resolutions of the stretched/resized images remains greater than 250ppi.

I have turned off image compression and selected high fidelity images but the images still appear to have had their resolutions reduced by Word when the file is saved, and some resolutions are eventually reduced below 200ppi.

How can I tell Word to leave the images exactly as set when inserted into the document?