DOC) document using OCR (optical character recognition) software. It is created by Microsoft Office to save scanned documents and may be turned into a Word (. How do I open a Mobi file on my Kindle?Īn MDI file is a document saved in a high-resolution, tag-based graphics format developed from the TIFF format.How do I open a TIF file with Microsoft Document Imaging?.How do I use Microsoft Document Imaging?.How do I make Microsoft Office Document Imaging my default viewer?.