Hi Prince,
No, PresentationBuilder only helps with splitting apart and joining presentations.
At this point, if you want to convert each PPT slide to an image, the best way is to automate PowerPoint, and let it do the work.
There may be commercial products out there that can help with this, but I have no experience with them.
I have the idea that if we could generate very nice HTML/CSS for PPTX, then we could use the HtmlToWmlConverter to import that content with high fidelity into DOCX. However, I haven’t started on PmlToHtmlConverter, and it is not in my current plans.
Wish I had a better answer for you, but I don’t.
Cheers, Eric