FB2, or FictionBook 2.0, is an eBook format designed for storing and sharing fiction literature. It uses XML-based markup to structure text, allowing for easy formatting of chapters, paragraphs, and other elements. This format is popular among readers and authors who prefer a flexible and open standard for digital books. FB2 files can be read on various devices, including eReaders, tablets, and smartphones, often requiring specific software or applications for optimal viewing. The format supports features like embedded images and metadata, making it a versatile choice for digital storytelling. Many users appreciate its compatibility with other formats and its ease of conversion to different eBook types.