To read FB2 files on a PC or Mac, you generally need dedicated "reader" software. Most of these programs can also open archives directly without needing to unpack them.

: A user-friendly Windows application that supports library management and night mode.

: A classic, lightweight choice available for Windows, macOS, and Linux.

The format is one of the most popular file types for electronic books, especially in Russia and Eastern Europe. It is based on XML, which allows it to preserve the structure of a book—chapters, verses, quotes, and footnotes—ensuring they look great on almost any screen. How to Open FB2 on a Computer

: A minimal, extremely fast document viewer for Windows that supports FB2 along with PDF and ePub. Best Apps for Mobile Devices Favourite Book Reader - FBReader