(short for FictionBook 2 ) is a popular, open-source XML-based ebook format primarily designed for fiction. It was developed by Russian programmers to ensure books could be easily stored, indexed, and converted into other formats without losing their structure. Key Characteristics of FB2
: All data, including images (stored as Base64), is contained within a single XML file.
: Books are often distributed as .fb2.zip files to save space; most modern readers can open these without unzipping them.