FD File

What are FD files and how to open them

Are you having problems opening a FD file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your FD files.

What is a FD file?

FD files have multiple uses, and FastDir-like Quick Directory Lookup Data is one of them. Read more about the other uses further down the page.

FastDir-like Quick Directory Lookup Data

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open FD files

Important: Different programs may use files with the FD file extension for different purposes, so unless you are sure which format your FD file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested three different FD openers which you will find listed below.

Last updated: July 13, 2020

All known file formats using extension .FD

While FastDir-like Quick Directory Lookup Data is a popular type of FD-file, we know of 2 different uses of the .FD file extension. Different software may use files with the same extension for different types of data.

LaTeX Font Definition

We know that one FD format is LaTeX Font Definition. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Various apps that use files with this extension

These apps are known to open certain types of FD files. Remember, different programs may use FD files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about FD file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.