PDF.to lays out each page of your DOC exactly as it would print, then renders that page to a PNG image. You get one PNG per page, capturing fonts, layout, tables, and figures as a flat picture.
Why turn a DOC into a PNG image?
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A PNG image of a DOC page is universally viewable, cannot be reflowed or accidentally edited, and drops straight into a slide, chat, or web page. It is the simplest way to share a DOC as a fixed snapshot.