HTML is the standard markup language used for creating web pages and applications. It structures content on the web, including text, images, links, and multimedia. HTML files are interpreted by web browsers to render web pages, making them essential for web development and content management.
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.