FB2 is an eBook format used primarily for storing and distributing fiction books. It is an XML-based format that supports text, images, and hyperlinks. FB2 files are lightweight and ideal for sharing books across different platforms and devices, particularly in the Russian-speaking community.
LRF is an eBook format used by Sony’s older eBook readers. It supports DRM (Digital Rights Management) and allows users to read digital books on Sony devices. LRF files are now largely obsolete, replaced by more popular formats like EPUB and PDF for eBook distribution.