.azw4 file extension is a file format developed by Amazon and is used by applications specifically designed for e-readers. It is mainly found on Kindle e-reader devices, a Kindle software is also available for desktops that allows interpretation and reading of azw4 files. It is used to read e-books normally purchased online. The greatest benefit that comes with using azw4 is that text does not have to stay static, so files transferred from a device with a larger screen to one with a smaller screen are adjusted and one does not have to zoom in order to read.
The .fb2 filename extension refers to the open XML based eBook format known as FictionBook. The file format was developed by Dmitry Gribov with an initial release in 2004, quickly gaining popularity in Russia. The format is open which in this context means it has no compatibility with digital rights management technologies. The structure of the format splits the contents of the data into three sections; title information, XML document information, and finally information about the paper edition which is optional.
FreeFileConvert uses tuned encoding for AZW4 to FB2 conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload AZW4 files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized FB2 results on any device you rely on.
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent FB2 audio with dependable progress tracking.
Unlike many e-book readers, Kindle devices and desktops that can read azw4 format cannot support EPUB. It is however intended for richly-formatted and reflow-able content found on e-books. Unlike EPUB, azw4 is a propriety format. This means that the file format is particularly encoded by Amazon, which is a secret form of encoding that can only be interpreted by a particular software or hardware developed by Amazon uses PDF and MOBI (a file format tailored for mobile devices that have low bandwidth) technologies and also includes protection by Digital Rights Management. It has systems combined to protect electronic media from copyrights.
Being extended from the XML format, the FictionBook file format describes the structure of the documents content, supporting metadata such as author, title, as well as special tags for quotations and epigraphs. Unicode is the supported character set used with the format. To display supported raster images, the images are first converted to a base 64 stream and contained within a binary tag. Plain text data typically loads first, being located at the top of the file with images allowed to load later in sequence.
Upload your ebook file in the AZW4 format from your device, Dropbox, or Google Drive.
Select FB2 as the output format and click Convert. Adjust optional settings if needed.
Download the converted ebook file. Each file stays available for up to 5 downloads.