The File Extensions Database

.FB2 File Extension

  • Developer by: FictionBook
  • Category: eBook Files
  • Format: Text

What is an .FB2 file?

.FB2 is FictionBook 2.0 File

An FB2 file is a FictionBook 2.0 file saved in an eBook format developed in Russia. It contains XML that describes each element of the book and is designed primarily for fictional literature. FB2 files can be viewed by various eBook readers for Windows, macOS, and Linux.

The FB2 file format specifies the structure of the eBook instead of the appearance. This makes it useful for converting into other formats. The format features simple semantic markup, metadata embedding, unicode, and inline formatting.

Since FB2 files can grow large in size, due to embedded images, they are often compressed in .ZIP files in order to transfer them more easily over the Internet. In these cases, the ".fb2" extension may be replaced with the ".zip" or "" extension.

Programs that open FictionBook 2.0 File
Cool Reader
Haali FictionBook Tools
Haali Reader
Geometer Plus FBReader
Icecream Ebook Reader
Apache OpenOffice with ooofbtools plug-in
Cool Reader
KDE Okular
Geometer Plus FBReader
Apache OpenOffice with ooofbtools plug-in
LTD DevelSoftware FB2 Reader
Cool Reader

How to solve problems with FB2 files

  • Associate the FB2 file extension with the correct application. On :
    Windows: Right click on any FB2 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.FB2 files". Mac: Right click (or Ctrl-click) the FB2 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .FB2 is FictionBook 2.0 File. Because only the current version supports the latest FB2 file format. Search, therefore, e.g. on the FictionBook manufacturer website after an available .FB2 is FictionBook 2.0 File update.
  • To make sure that your FB2 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.