Extract text from FDI files
To convert your FDI file to another format, you need Neko Project II or other Disk Image software.
To convert other file formats to the "Emulation Disk Image" file type, you need software like Neko Project II or a similar tool.
The .FDI extension typically identifies a NEC PC-98 Floppy Disk Image, a format used to preserve software from the Japanese PC-9800 computing architecture. While critical for retro gaming and software preservation, these files are effectively useless on modern operating systems like Windows 11 or macOS, as they cannot be mounted or read by standard archive tools. To access the data, users generally need specialized emulators like Anex86 or Neko Project II, or they must convert the proprietary header information into a raw binary format like IMG or IMA for broader compatibility.
A significant minority of .FDI files are actually FormDocs Filler Files created by FormDocs. These are electronic forms replacing paper workflows in business environments. The friction here is proprietary lock-in; without the specific FormDocs viewer, the content is inaccessible. For these users, the best workflow is converting the .FDI form directly to PDF for archiving, printing, and universal sharing.
Less commonly, this extension represents a phylogenetic network file used by Fluxus Technology software for visualizing genetic data. Researchers dealing with these files often need to convert the network visualizations into SVG or PNG for publication in academic journals, as the native format is largely unrecognized outside of bioinformatics circles.
Convert.Guru analyzes your FDI file, detects the exact format, and lets you read the text inside.
Users also converted FDD, HDI, RTT, ISA and ISK files.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our FDI converter.