DevConverter converts your ebooks online. Amongst many others, we support EPUB, PDF, AZW and CBZ. No need to download any software to convert between various ebook formats!
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.