LRF is an eBook format used by Sony’s older eBook readers. It supports DRM (Digital Rights Management) and allows users to read digital books on Sony devices. LRF files are now largely obsolete, replaced by more popular formats like EPUB and PDF for eBook distribution.
RTF is a rich text file format that allows for basic document formatting, including text styles, fonts, and paragraph alignment. It is widely compatible across different platforms and applications. RTF files are ideal for sharing documents that need to maintain formatting but do not require advanced features like those found in DOCX or PDF files.