Files with the FB2 extension (Fiction Book 2.0) are eBook files, supported by various reading devices. The format is based on XML, but unlike the EPUB format (which contains data in different files but a in a single ZIP package), its structure comprises of a single XML file. This format was created and it gain most popularity in Russia, initially in the domain of fantasy literature.
Data contained within FB2 files hold, among others: titles, publishing data, such as information about the author, the ISBN number, information on the publishing house, structure or verse, therefore, this format if perfect for indexing and storing data about eBooks. The format is widely used by various indexing software. Besides the text data within an XML file, which is the basis of the format, also all the images can be found there – converted into Base64 and placed under a <binary> tag.
Due to its characteristics and the method used for storing graphic data, volume of the images is almost 40% bigger than of the original. Therefore, we often encounter FB2 files compressed into an FB2.ZIP archives, which are supported directly by most devices and programs.
Due to placing graphic (high volume binary data) on the end of XML files, an eBook can be rendered within a program before being loaded completely.
By changing the FB2 extension into ZIP, one can easily obtain direct access to the text content of an eBook, and its metadata – by unpacking the file with one of the popular tools for this purpose (such as 7-zip).
When you install one of the applications from the list of programs that you found here, you should be able to open or edit the file with the FB2 extension without any issue. However, if you still have problems with this, you may use the option of FB2 file conversion to a different format.
We hope we helped you solve the problem with the FB2 file. If you do not know where you can download the application from our list, click on the link (which is the name of the program) - you will find more information there on the location where to download the secure setup version of the required application.
There can be more reasons which determine that you are not able to open the FB2 file (apart from the lack of the proper application installed).
First - the FB2 file may be incorrectly associated with the application installed to support it. In this case, you need to change this association by yourself. To do this, right-click on the FB2 file that you want to edit, click "Open with" and then select the program from the list that you have installed. After this operation, the problems with opening the FB2 file should be solved.
Second - the file you want to open can simply be damaged. Then, the best solution is to find a new version of given file, or download it again from the same source as before (maybe for some reason in the previous session the download of the FB2 file has not been completed and it cannot be opened properly).
If you have additional information about the FB2 file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on FB2 file.