In this article, we'll explain how to open an FB2 eBook file on all your devices and how to convert the file to another document format.
How can I open or view EPUB files in Windows without using third-party software?
A file with the FB2 file extension is a FictionBook eBook file. The format was built to cater to fictional writings, but of course can be used to contain any type of eBook.
FB2 files are DRM-free and can contain footnotes, images, text formatting, Unicode, and tables, all of which may or may not be supported in some FB2 readers. Any images used in the book, such as PNGs or JPGs, are converted to Base64 (binary) and stored within the file itself.
Unlike other ebook files such as EPUB, FictionBook ebook files are just a single XML file.