FB2或VirtualBook是一种基于XML的电子书格式。FB2不同于其他电子书格式，因为它只使用一个XML文件。电子书中嵌入的图像也有所增加。它在开头包含元数据和纯文本。它将图像放在文件的末尾。电子书阅读器在打开任何FB2文件之前进行渲染。
FB2 or FictionBook is an XML based ebook format. FB2 is different than other eBook format as it uses only one XML file. The embedded images with eBook are also increased. It contains both metadata and plain texts at beginning. It places image at the end of the file. eBOOK readers render before opening any FB2 file.
