PDF is a widely used file format for documents that need to maintain their original formatting across different devices. It can store text, images, and interactive elements like hyperlinks or forms. PDF files are commonly used for contracts, brochures, and professional reports.
AZW3 is a proprietary ebook format developed by Amazon for Kindle devices. It supports more complex content than older formats like AZW, including HTML5 and CSS3 elements, embedded fonts, and multimedia. AZW3 files provide better compatibility and richer features for modern Kindle devices and apps.