If you are seeking information about file extensions, then you are in the right place at the right time.

Details of extension .fb

On this page, we're going to take a closer look at the .fb file extension.

We'll explain what exactly a .fb file format is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .fb files into different formats, we'll give you some tips on how to do that too.

Let's see the 3 file formats associated with this file extension!


  1. Slim! Compressed Archive
  2. DR-DOS Backup Data
  3. Gforth Blocks File

We trust that our website will provide valuable information for you. If you have any questions, just ask!

Slim! Compressed Archive

fb file - Slim! Compressed Archive
The FB file belongs to the Archive category and works with Slim!, being used as a Slim! Compressed Archive. Slim! is a powerful experimental compression utility, bundled with basic archiving functionality. Its primary purpose is to achieve maximum possible compression level, disregarding compression speed and memory requirements. The developer no longer updates Slim! and does not provide support anymore. Based on our current information, Slim! does not use other file types.
Application: Slim!
Program name: -
Category: Archive files
Mime-type: application/octet-stream
Related extensions:
.dur DURILCA Compressed Archive
.cryptomite CryptoMite Encrypted Archive
.cru Crush Compressed Archive
.chz ChArc Compressed Archive

DR-DOS Backup Data

fb file - DR-DOS Backup Data
The FB file belongs to the Data category and works with DR-DOS, being used as a DR-DOS Backup Data. DR-DOS is an operating system of the DOS family. The developer no longer updates DR-DOS and does not provide support anymore. According to our data, DR-DOS uses one more file types.
Application: DR-DOS
Program name: -
Category: Data files
Mime-type: application/octet-stream
Related extensions:
.app DR-DOS Executable

Gforth Blocks File

fb file - Gforth Blocks File
The FB file belongs to the Development category and works with Gforth, being used as a Gforth Blocks File. Gforth is the Forth implementation of the GNU project. A block is a 1024-byte data area, which can be used to hold data or Forth source code. The developer is still actively supporting the Gforth, likely. Our data shows that Gforth uses 3 more file types.
Application: Gforth
Program name: -
Category: Development files
Mime-type: application/octet-stream
Related extensions:
.fs Gforth Forth Stream Source Code
.fi Gforth Image File
.fs Forth Source Code

The .fb file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .fb extension may contain various content types. If you have helpful information about this extension, write to us!

Could someone have spelled the .fb file extension wrong?

In our database, we came across the following similar extensions:

.fv Fresh View Thumbnail Cache
.eb EBwin Project
.cb CoolBasic Source Code
.vb Virtual Boy ROM
.fn GCL Cross Referencing Data
.db Windows Thumbnail Cache

The .fb extension is frequently misused

People sometimes confuse the .fb filename extension. Based on the searches on our site, here are the most common misspellings from the past year.

fv (1), eb (1), cb (1), vb (1), fn (1), db (1), bb (1), tb (1), fh (1), gb (1)

Having trouble opening a .fb file?

If you want to open a .fb file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .fb association can trigger this error.

Windows can't open this file:

File: example.fb

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program with which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android