Convert AZW to RB

The AZW file extension, standing for Amazon Word, is a proprietary eBook format developed by Amazon for its Kindle devices. Introduced in 2007, AZW files are based on the MOBI format, offering enhanced compression and DRM protection to prevent unauthorized copying. These files store eBooks along with bookmarks, annotations, and last-read locations. Initially used on first-generation Kindles, AZW has evolved into AZW3 (KF8) and KFX formats, supporting advanced features like HTML5 and CSS3. AZW files are primarily used for distributing and reading eBooks on Kindle devices and apps.

The RB file extension stands for Rocket eBook File, used by the Rocket eBook device from NuvoMedia, introduced in 1998. It is a container format for eBooks, typically holding HTML content and metadata. Although it supports DRM, modern eBooks no longer use this feature. The format includes a unique file structure with specific byte sequences for versioning and content organization.