Convert LRF to AZW3

The LRF (Sony Portable Reader File) is a proprietary eBook format developed by Sony for its eReaders, such as the Sony Reader. It stores eBooks and textual content in a compressed binary format, including text, images, and pagination data. Introduced as part of the Broad Band eBook (BBeB) family, LRF files are unencrypted, whereas their encrypted counterparts use the LRX extension. The format became obsolete in 2010 when Sony transitioned to the EPUB format. Despite its obsolescence, LRF files can still be opened and converted using various software tools.

The AZW3 file extension, also known as Kindle Format 8 (KF8), is a proprietary eBook format developed by Amazon. Introduced in 2011 alongside the Kindle Fire, AZW3 supports advanced formatting features such as HTML5 and CSS3, enhancing the visual presentation of eBooks. It is primarily used for Amazon Kindle devices and applications, providing a richer reading experience compared to its predecessor, AZW. The format is backward-compatible with MOBI, ensuring older Kindle devices can still access the content.