Convert OPF to AZW

The Open Packaging Format (OPF) is a critical component in the EPUB digital publishing standard, specifically designed for eBooks. OPF files serve as a manifest that organizes and structures the contents of an EPUB file, including metadata, the reading order, and resource files. This standard, introduced by the International Digital Publishing Forum (IDPF) in 2007, aimed to streamline the publication and distribution of eBooks, ensuring compatibility across various devices and reading software. The OPF's primary purpose is to enhance the accessibility and interoperability of digital content within the rapidly evolving landscape of electronic publishing.

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.