| File Type | Microsoft Document Imaging File |
| Popularity | Average |
| Category | Raster Image Files |
| File Description | High-resolution, tag-based graphics format developed from the TIFF format; used by Microsoft Office for saving scanned documents; may be turned into a Word (.DOC) document using OCR (optical character recognition) software.NOTE: Saving documents created with Office Document Imaging in the .TIF format allows for better compatibility with other programs. |
| Program(s) that open mdi files | Microsoft Office Document Imaging (part of Office 2003 or later) MDI viewer. |