MDI file format
| Extension | .mdi |
| Category | documents |
| Description | The MDI (Microsoft Document Imaging) format is a file format developed by Microsoft for storing images that have been scanned or generated using the Microsoft Office Document Imaging (MODI) application. MDI files usually contain black-and-white or grayscale images of documents, such as scanned pages of text, invoices, or diagrams. They are commonly used for archiving and sharing scanned documents digitally, as they offer small file sizes while maintaining text clarity and image quality. MDI files can be viewed and edited using Microsoft Office Document Imaging or converted to other formats for wider compatibility, such as TIFF or PDF. |
| Technical details | MDI files usually utilize a type of lossless image compression called Modified Huffman Coding (MH) or Group 3 Fax Encoding (G3). These compression techniques decrease the file size of scanned documents without compromising the image quality. |